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Finding the Fourth Proportional to 439,801.62, 659,739.50 and 140,324.78

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Solution

The fourth proportional to 439,801.62, 659,739.50 and 140,324.78 is: 210,499.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,801.62 : 659,739.50 = 140,324.78 : x
  2. Step 2: Convert to fraction form
    439,801.62/659,739.50 = 140,324.78/x
  3. Step 3: Cross multiply
    439,801.62x = 659,739.50 × 140,324.78
  4. Step 4: Simplify right side
    439,801.62x = 92,577,800,194.81
  5. Step 5: Solve for x
    x = 92,577,800,194.81/439,801.62
  6. Step 6: Final answer
    x = 210,499.00

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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.