Home / 521,176.20-781,691.40-166,226.10

Finding the Fourth Proportional to 521,176.20, 781,691.40 and 166,226.10

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Solution

The fourth proportional to 521,176.20, 781,691.40 and 166,226.10 is: 249,315.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,176.20 : 781,691.40 = 166,226.10 : x
  2. Step 2: Convert to fraction form
    521,176.20/781,691.40 = 166,226.10/x
  3. Step 3: Cross multiply
    521,176.20x = 781,691.40 × 166,226.10
  4. Step 4: Simplify right side
    521,176.20x = 129,937,512,825.54
  5. Step 5: Solve for x
    x = 129,937,512,825.54/521,176.20
  6. Step 6: Final answer
    x = 249,315.90

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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.