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Finding the Fourth Proportional to 318,781.56, 439,918.56 and 175,541.27

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Solution

The fourth proportional to 318,781.56, 439,918.56 and 175,541.27 is: 242,246.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,781.56 : 439,918.56 = 175,541.27 : x
  2. Step 2: Convert to fraction form
    318,781.56/439,918.56 = 175,541.27/x
  3. Step 3: Cross multiply
    318,781.56x = 439,918.56 × 175,541.27
  4. Step 4: Simplify right side
    318,781.56x = 77,223,860,080.53
  5. Step 5: Solve for x
    x = 77,223,860,080.53/318,781.56
  6. Step 6: Final answer
    x = 242,246.95

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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.