Home / 638,964.20-958,446.30-165,645.80

Finding the Fourth Proportional to 638,964.20, 958,446.30 and 165,645.80

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Solution

The fourth proportional to 638,964.20, 958,446.30 and 165,645.80 is: 248,468.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,964.20 : 958,446.30 = 165,645.80 : x
  2. Step 2: Convert to fraction form
    638,964.20/958,446.30 = 165,645.80/x
  3. Step 3: Cross multiply
    638,964.20x = 958,446.30 × 165,645.80
  4. Step 4: Simplify right side
    638,964.20x = 158,762,604,120.54
  5. Step 5: Solve for x
    x = 158,762,604,120.54/638,964.20
  6. Step 6: Final answer
    x = 248,468.70

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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.