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Finding the Fourth Proportional to 521,609.40, 782,414.10 and 166,659.30

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Solution

The fourth proportional to 521,609.40, 782,414.10 and 166,659.30 is: 249,988.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,609.40 : 782,414.10 = 166,659.30 : x
  2. Step 2: Convert to fraction form
    521,609.40/782,414.10 = 166,659.30/x
  3. Step 3: Cross multiply
    521,609.40x = 782,414.10 × 166,659.30
  4. Step 4: Simplify right side
    521,609.40x = 130,396,586,216.13
  5. Step 5: Solve for x
    x = 130,396,586,216.13/521,609.40
  6. Step 6: Final answer
    x = 249,988.95

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Similar ratio
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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.