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Finding the Fourth Proportional to 439,790.73, 659,748.98 and 140,274.71

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Solution

The fourth proportional to 439,790.73, 659,748.98 and 140,274.71 is: 210,432.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,790.73 : 659,748.98 = 140,274.71 : x
  2. Step 2: Convert to fraction form
    439,790.73/659,748.98 = 140,274.71/x
  3. Step 3: Cross multiply
    439,790.73x = 659,748.98 × 140,274.71
  4. Step 4: Simplify right side
    439,790.73x = 92,546,096,842.30
  5. Step 5: Solve for x
    x = 92,546,096,842.30/439,790.73
  6. Step 6: Final answer
    x = 210,432.12

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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.