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Finding the Fourth Proportional to 521,129.70, 781,168.28 and 250,860.92

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Solution

The fourth proportional to 521,129.70, 781,168.28 and 250,860.92 is: 376,038.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,129.70 : 781,168.28 = 250,860.92 : x
  2. Step 2: Convert to fraction form
    521,129.70/781,168.28 = 250,860.92/x
  3. Step 3: Cross multiply
    521,129.70x = 781,168.28 × 250,860.92
  4. Step 4: Simplify right side
    521,129.70x = 195,964,588,235.47
  5. Step 5: Solve for x
    x = 195,964,588,235.47/521,129.70
  6. Step 6: Final answer
    x = 376,038.03

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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.