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Finding the Fourth Proportional to 247,376.43, 371,115.07 and 105,221.43

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Solution

The fourth proportional to 247,376.43, 371,115.07 and 105,221.43 is: 157,853.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,376.43 : 371,115.07 = 105,221.43 : x
  2. Step 2: Convert to fraction form
    247,376.43/371,115.07 = 105,221.43/x
  3. Step 3: Cross multiply
    247,376.43x = 371,115.07 × 105,221.43
  4. Step 4: Simplify right side
    247,376.43x = 39,049,258,096.90
  5. Step 5: Solve for x
    x = 39,049,258,096.90/247,376.43
  6. Step 6: Final answer
    x = 157,853.59

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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.