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Finding the Fourth Proportional to 235,395.30, 324,851.92 and 127,972.68

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Solution

The fourth proportional to 235,395.30, 324,851.92 and 127,972.68 is: 176,605.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,395.30 : 324,851.92 = 127,972.68 : x
  2. Step 2: Convert to fraction form
    235,395.30/324,851.92 = 127,972.68/x
  3. Step 3: Cross multiply
    235,395.30x = 324,851.92 × 127,972.68
  4. Step 4: Simplify right side
    235,395.30x = 41,572,170,805.55
  5. Step 5: Solve for x
    x = 41,572,170,805.55/235,395.30
  6. Step 6: Final answer
    x = 176,605.78

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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.