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Finding the Fourth Proportional to 250,472.40, 345,665.16 and 137,299.92

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Solution

The fourth proportional to 250,472.40, 345,665.16 and 137,299.92 is: 189,481.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,472.40 : 345,665.16 = 137,299.92 : x
  2. Step 2: Convert to fraction form
    250,472.40/345,665.16 = 137,299.92/x
  3. Step 3: Cross multiply
    250,472.40x = 345,665.16 × 137,299.92
  4. Step 4: Simplify right side
    250,472.40x = 47,459,798,814.79
  5. Step 5: Solve for x
    x = 47,459,798,814.79/250,472.40
  6. Step 6: Final answer
    x = 189,481.15

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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.