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Finding the Fourth Proportional to 202,355.38, 279,248.86 and 111,711.46

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Solution

The fourth proportional to 202,355.38, 279,248.86 and 111,711.46 is: 154,160.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,355.38 : 279,248.86 = 111,711.46 : x
  2. Step 2: Convert to fraction form
    202,355.38/279,248.86 = 111,711.46/x
  3. Step 3: Cross multiply
    202,355.38x = 279,248.86 × 111,711.46
  4. Step 4: Simplify right side
    202,355.38x = 31,195,297,853.94
  5. Step 5: Solve for x
    x = 31,195,297,853.94/202,355.38
  6. Step 6: Final answer
    x = 154,160.95

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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.