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Finding the Fourth Proportional to 250,788.67, 375,540.72 and 138,343.90

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Solution

The fourth proportional to 250,788.67, 375,540.72 and 138,343.90 is: 207,161.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,788.67 : 375,540.72 = 138,343.90 : x
  2. Step 2: Convert to fraction form
    250,788.67/375,540.72 = 138,343.90/x
  3. Step 3: Cross multiply
    250,788.67x = 375,540.72 × 138,343.90
  4. Step 4: Simplify right side
    250,788.67x = 51,953,767,813.61
  5. Step 5: Solve for x
    x = 51,953,767,813.61/250,788.67
  6. Step 6: Final answer
    x = 207,161.54

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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.