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Finding the Fourth Proportional to 318,780.59, 439,917.17 and 175,540.28

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Solution

The fourth proportional to 318,780.59, 439,917.17 and 175,540.28 is: 242,245.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,780.59 : 439,917.17 = 175,540.28 : x
  2. Step 2: Convert to fraction form
    318,780.59/439,917.17 = 175,540.28/x
  3. Step 3: Cross multiply
    318,780.59x = 439,917.17 × 175,540.28
  4. Step 4: Simplify right side
    318,780.59x = 77,223,180,121.32
  5. Step 5: Solve for x
    x = 77,223,180,121.32/318,780.59
  6. Step 6: Final answer
    x = 242,245.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.