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Finding the Fourth Proportional to 220,503.29, 304,257.65 and 129,877.30

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Solution

The fourth proportional to 220,503.29, 304,257.65 and 129,877.30 is: 179,208.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,503.29 : 304,257.65 = 129,877.30 : x
  2. Step 2: Convert to fraction form
    220,503.29/304,257.65 = 129,877.30/x
  3. Step 3: Cross multiply
    220,503.29x = 304,257.65 × 129,877.30
  4. Step 4: Simplify right side
    220,503.29x = 39,516,163,202.73
  5. Step 5: Solve for x
    x = 39,516,163,202.73/220,503.29
  6. Step 6: Final answer
    x = 179,208.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.