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Finding the Fourth Proportional to 253,710.72, 350,121.24 and 140,531.04

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Solution

The fourth proportional to 253,710.72, 350,121.24 and 140,531.04 is: 193,933.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,710.72 : 350,121.24 = 140,531.04 : x
  2. Step 2: Convert to fraction form
    253,710.72/350,121.24 = 140,531.04/x
  3. Step 3: Cross multiply
    253,710.72x = 350,121.24 × 140,531.04
  4. Step 4: Simplify right side
    253,710.72x = 49,202,901,983.29
  5. Step 5: Solve for x
    x = 49,202,901,983.29/253,710.72
  6. Step 6: Final answer
    x = 193,933.08

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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.