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Finding the Fourth Proportional to 220,414.71, 303,890.71 and 142,753.14

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Solution

The fourth proportional to 220,414.71, 303,890.71 and 142,753.14 is: 196,816.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,414.71 : 303,890.71 = 142,753.14 : x
  2. Step 2: Convert to fraction form
    220,414.71/303,890.71 = 142,753.14/x
  3. Step 3: Cross multiply
    220,414.71x = 303,890.71 × 142,753.14
  4. Step 4: Simplify right side
    220,414.71x = 43,381,352,712.45
  5. Step 5: Solve for x
    x = 43,381,352,712.45/220,414.71
  6. Step 6: Final answer
    x = 196,816.96

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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.