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Finding the Fourth Proportional to 664,874.20, 997,311.18 and 166,238.20

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Solution

The fourth proportional to 664,874.20, 997,311.18 and 166,238.20 is: 249,357.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,874.20 : 997,311.18 = 166,238.20 : x
  2. Step 2: Convert to fraction form
    664,874.20/997,311.18 = 166,238.20/x
  3. Step 3: Cross multiply
    664,874.20x = 997,311.18 × 166,238.20
  4. Step 4: Simplify right side
    664,874.20x = 165,791,215,403.08
  5. Step 5: Solve for x
    x = 165,791,215,403.08/664,874.20
  6. Step 6: Final answer
    x = 249,357.27

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.