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Finding the Fourth Proportional to 351,738, 527,766.18 and 138,447.18

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Solution

The fourth proportional to 351,738, 527,766.18 and 138,447.18 is: 207,733.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,738 : 527,766.18 = 138,447.18 : x
  2. Step 2: Convert to fraction form
    351,738/527,766.18 = 138,447.18/x
  3. Step 3: Cross multiply
    351,738x = 527,766.18 × 138,447.18
  4. Step 4: Simplify right side
    351,738x = 73,067,739,320.37
  5. Step 5: Solve for x
    x = 73,067,739,320.37/351,738
  6. Step 6: Final answer
    x = 207,733.42

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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.