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Finding the Fourth Proportional to 253,693.61, 350,092.76 and 138,974.53

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Solution

The fourth proportional to 253,693.61, 350,092.76 and 138,974.53 is: 191,782.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,693.61 : 350,092.76 = 138,974.53 : x
  2. Step 2: Convert to fraction form
    253,693.61/350,092.76 = 138,974.53/x
  3. Step 3: Cross multiply
    253,693.61x = 350,092.76 × 138,974.53
  4. Step 4: Simplify right side
    253,693.61x = 48,653,976,777.40
  5. Step 5: Solve for x
    x = 48,653,976,777.40/253,693.61
  6. Step 6: Final answer
    x = 191,782.43

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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.