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Finding the Fourth Proportional to 439,763.64, 659,693.22 and 140,173.80

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Solution

The fourth proportional to 439,763.64, 659,693.22 and 140,173.80 is: 210,275.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,763.64 : 659,693.22 = 140,173.80 : x
  2. Step 2: Convert to fraction form
    439,763.64/659,693.22 = 140,173.80/x
  3. Step 3: Cross multiply
    439,763.64x = 659,693.22 × 140,173.80
  4. Step 4: Simplify right side
    439,763.64x = 92,471,705,481.64
  5. Step 5: Solve for x
    x = 92,471,705,481.64/439,763.64
  6. Step 6: Final answer
    x = 210,275.92

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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.