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Finding the Fourth Proportional to 287,861.62, 431,805.39 and 88,167.46

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Solution

The fourth proportional to 287,861.62, 431,805.39 and 88,167.46 is: 132,255.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,861.62 : 431,805.39 = 88,167.46 : x
  2. Step 2: Convert to fraction form
    287,861.62/431,805.39 = 88,167.46/x
  3. Step 3: Cross multiply
    287,861.62x = 431,805.39 × 88,167.46
  4. Step 4: Simplify right side
    287,861.62x = 38,071,184,450.61
  5. Step 5: Solve for x
    x = 38,071,184,450.61/287,861.62
  6. Step 6: Final answer
    x = 132,255.16

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1.5x scale

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.