Home / 521,023.91-781,521.28-166,059.23

Finding the Fourth Proportional to 521,023.91, 781,521.28 and 166,059.23

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Solution

The fourth proportional to 521,023.91, 781,521.28 and 166,059.23 is: 249,084.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,023.91 : 781,521.28 = 166,059.23 : x
  2. Step 2: Convert to fraction form
    521,023.91/781,521.28 = 166,059.23/x
  3. Step 3: Cross multiply
    521,023.91x = 781,521.28 × 166,059.23
  4. Step 4: Simplify right side
    521,023.91x = 129,778,817,662.66
  5. Step 5: Solve for x
    x = 129,778,817,662.66/521,023.91
  6. Step 6: Final answer
    x = 249,084.19

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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.