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Finding the Fourth Proportional to 659,753.32, 989,727.20 and 238,930.80

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Solution

The fourth proportional to 659,753.32, 989,727.20 and 238,930.80 is: 358,431.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,753.32 : 989,727.20 = 238,930.80 : x
  2. Step 2: Convert to fraction form
    659,753.32/989,727.20 = 238,930.80/x
  3. Step 3: Cross multiply
    659,753.32x = 989,727.20 × 238,930.80
  4. Step 4: Simplify right side
    659,753.32x = 236,476,311,677.76
  5. Step 5: Solve for x
    x = 236,476,311,677.76/659,753.32
  6. Step 6: Final answer
    x = 358,431.41

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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.