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Finding the Fourth Proportional to 537,755.56, 806,627.86 and 138,394.78

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Solution

The fourth proportional to 537,755.56, 806,627.86 and 138,394.78 is: 207,590.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    537,755.56 : 806,627.86 = 138,394.78 : x
  2. Step 2: Convert to fraction form
    537,755.56/806,627.86 = 138,394.78/x
  3. Step 3: Cross multiply
    537,755.56x = 806,627.86 × 138,394.78
  4. Step 4: Simplify right side
    537,755.56x = 111,633,085,226.57
  5. Step 5: Solve for x
    x = 111,633,085,226.57/537,755.56
  6. Step 6: Final answer
    x = 207,590.76

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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.