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Finding the Fourth Proportional to 208,049.10, 312,073.65 and 187,053.90

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Solution

The fourth proportional to 208,049.10, 312,073.65 and 187,053.90 is: 280,580.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,049.10 : 312,073.65 = 187,053.90 : x
  2. Step 2: Convert to fraction form
    208,049.10/312,073.65 = 187,053.90/x
  3. Step 3: Cross multiply
    208,049.10x = 312,073.65 × 187,053.90
  4. Step 4: Simplify right side
    208,049.10x = 58,374,593,319.74
  5. Step 5: Solve for x
    x = 58,374,593,319.74/208,049.10
  6. Step 6: Final answer
    x = 280,580.85

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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.