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Finding the Fourth Proportional to 253,605.52, 349,986.17 and 140,428.27

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Solution

The fourth proportional to 253,605.52, 349,986.17 and 140,428.27 is: 193,796.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,605.52 : 349,986.17 = 140,428.27 : x
  2. Step 2: Convert to fraction form
    253,605.52/349,986.17 = 140,428.27/x
  3. Step 3: Cross multiply
    253,605.52x = 349,986.17 × 140,428.27
  4. Step 4: Simplify right side
    253,605.52x = 49,147,949,924.95
  5. Step 5: Solve for x
    x = 49,147,949,924.95/253,605.52
  6. Step 6: Final answer
    x = 193,796.85

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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.