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Finding the Fourth Proportional to 521,702.70, 781,970.85 and 222,132.30

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Solution

The fourth proportional to 521,702.70, 781,970.85 and 222,132.30 is: 332,950.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,702.70 : 781,970.85 = 222,132.30 : x
  2. Step 2: Convert to fraction form
    521,702.70/781,970.85 = 222,132.30/x
  3. Step 3: Cross multiply
    521,702.70x = 781,970.85 × 222,132.30
  4. Step 4: Simplify right side
    521,702.70x = 173,700,983,443.46
  5. Step 5: Solve for x
    x = 173,700,983,443.46/521,702.70
  6. Step 6: Final answer
    x = 332,950.13

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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.