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Finding the Fourth Proportional to 664,909.56, 997,364.40 and 166,273.56

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Solution

The fourth proportional to 664,909.56, 997,364.40 and 166,273.56 is: 249,410.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,909.56 : 997,364.40 = 166,273.56 : x
  2. Step 2: Convert to fraction form
    664,909.56/997,364.40 = 166,273.56/x
  3. Step 3: Cross multiply
    664,909.56x = 997,364.40 × 166,273.56
  4. Step 4: Simplify right side
    664,909.56x = 165,835,329,405.26
  5. Step 5: Solve for x
    x = 165,835,329,405.26/664,909.56
  6. Step 6: Final answer
    x = 249,410.36

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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.