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Finding the Fourth Proportional to 250,708.41, 375,709.05 and 138,439.17

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Solution

The fourth proportional to 250,708.41, 375,709.05 and 138,439.17 is: 207,463.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,708.41 : 375,709.05 = 138,439.17 : x
  2. Step 2: Convert to fraction form
    250,708.41/375,709.05 = 138,439.17/x
  3. Step 3: Cross multiply
    250,708.41x = 375,709.05 × 138,439.17
  4. Step 4: Simplify right side
    250,708.41x = 52,012,849,043.49
  5. Step 5: Solve for x
    x = 52,012,849,043.49/250,708.41
  6. Step 6: Final answer
    x = 207,463.52

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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.