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Finding the Fourth Proportional to 371,861.28, 557,824.32 and 105,624

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Solution

The fourth proportional to 371,861.28, 557,824.32 and 105,624 is: 158,445.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,861.28 : 557,824.32 = 105,624 : x
  2. Step 2: Convert to fraction form
    371,861.28/557,824.32 = 105,624/x
  3. Step 3: Cross multiply
    371,861.28x = 557,824.32 × 105,624
  4. Step 4: Simplify right side
    371,861.28x = 58,919,635,975.68
  5. Step 5: Solve for x
    x = 58,919,635,975.68/371,861.28
  6. Step 6: Final answer
    x = 158,445.20

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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.