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Finding the Fourth Proportional to 423,115.60, 634,674.88 and 107,572.54

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Solution

The fourth proportional to 423,115.60, 634,674.88 and 107,572.54 is: 161,359.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,115.60 : 634,674.88 = 107,572.54 : x
  2. Step 2: Convert to fraction form
    423,115.60/634,674.88 = 107,572.54/x
  3. Step 3: Cross multiply
    423,115.60x = 634,674.88 × 107,572.54
  4. Step 4: Simplify right side
    423,115.60x = 68,273,588,915.80
  5. Step 5: Solve for x
    x = 68,273,588,915.80/423,115.60
  6. Step 6: Final answer
    x = 161,359.19

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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.