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Finding the Fourth Proportional to 439,793.70, 659,690.55 and 140,296.20

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Solution

The fourth proportional to 439,793.70, 659,690.55 and 140,296.20 is: 210,444.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,793.70 : 659,690.55 = 140,296.20 : x
  2. Step 2: Convert to fraction form
    439,793.70/659,690.55 = 140,296.20/x
  3. Step 3: Cross multiply
    439,793.70x = 659,690.55 × 140,296.20
  4. Step 4: Simplify right side
    439,793.70x = 92,552,077,340.91
  5. Step 5: Solve for x
    x = 92,552,077,340.91/439,793.70
  6. Step 6: Final answer
    x = 210,444.30

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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.