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Finding the Fourth Proportional to 287,892.40, 431,800.80 and 88,232.80

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Solution

The fourth proportional to 287,892.40, 431,800.80 and 88,232.80 is: 132,337.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,892.40 : 431,800.80 = 88,232.80 : x
  2. Step 2: Convert to fraction form
    287,892.40/431,800.80 = 88,232.80/x
  3. Step 3: Cross multiply
    287,892.40x = 431,800.80 × 88,232.80
  4. Step 4: Simplify right side
    287,892.40x = 38,098,993,626.24
  5. Step 5: Solve for x
    x = 38,098,993,626.24/287,892.40
  6. Step 6: Final answer
    x = 132,337.62

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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.