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Finding the Fourth Proportional to 253,732.22, 350,135.39 and 138,987.92

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Solution

The fourth proportional to 253,732.22, 350,135.39 and 138,987.92 is: 191,795.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,732.22 : 350,135.39 = 138,987.92 : x
  2. Step 2: Convert to fraction form
    253,732.22/350,135.39 = 138,987.92/x
  3. Step 3: Cross multiply
    253,732.22x = 350,135.39 × 138,987.92
  4. Step 4: Simplify right side
    253,732.22x = 48,664,587,128.87
  5. Step 5: Solve for x
    x = 48,664,587,128.87/253,732.22
  6. Step 6: Final answer
    x = 191,795.07

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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.