Home / 521,017.30-781,569.15-166,021.30

Finding the Fourth Proportional to 521,017.30, 781,569.15 and 166,021.30

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Solution

The fourth proportional to 521,017.30, 781,569.15 and 166,021.30 is: 249,045.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,017.30 : 781,569.15 = 166,021.30 : x
  2. Step 2: Convert to fraction form
    521,017.30/781,569.15 = 166,021.30/x
  3. Step 3: Cross multiply
    521,017.30x = 781,569.15 × 166,021.30
  4. Step 4: Simplify right side
    521,017.30x = 129,757,126,322.90
  5. Step 5: Solve for x
    x = 129,757,126,322.90/521,017.30
  6. Step 6: Final answer
    x = 249,045.72

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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.