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Finding the Fourth Proportional to 250,717.21, 375,722.19 and 138,447.97

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Solution

The fourth proportional to 250,717.21, 375,722.19 and 138,447.97 is: 207,476.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,717.21 : 375,722.19 = 138,447.97 : x
  2. Step 2: Convert to fraction form
    250,717.21/375,722.19 = 138,447.97/x
  3. Step 3: Cross multiply
    250,717.21x = 375,722.19 × 138,447.97
  4. Step 4: Simplify right side
    250,717.21x = 52,017,974,489.45
  5. Step 5: Solve for x
    x = 52,017,974,489.45/250,717.21
  6. Step 6: Final answer
    x = 207,476.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.