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Finding the Fourth Proportional to 318,780.84, 439,917.51 and 175,540.53

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Solution

The fourth proportional to 318,780.84, 439,917.51 and 175,540.53 is: 242,245.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,780.84 : 439,917.51 = 175,540.53 : x
  2. Step 2: Convert to fraction form
    318,780.84/439,917.51 = 175,540.53/x
  3. Step 3: Cross multiply
    318,780.84x = 439,917.51 × 175,540.53
  4. Step 4: Simplify right side
    318,780.84x = 77,223,352,861.68
  5. Step 5: Solve for x
    x = 77,223,352,861.68/318,780.84
  6. Step 6: Final answer
    x = 242,245.90

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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.