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Finding the Fourth Proportional to 247,393, 371,262.30 and 99,649

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Solution

The fourth proportional to 247,393, 371,262.30 and 99,649 is: 149,543.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,393 : 371,262.30 = 99,649 : x
  2. Step 2: Convert to fraction form
    247,393/371,262.30 = 99,649/x
  3. Step 3: Cross multiply
    247,393x = 371,262.30 × 99,649
  4. Step 4: Simplify right side
    247,393x = 36,995,916,932.70
  5. Step 5: Solve for x
    x = 36,995,916,932.70/247,393
  6. Step 6: Final answer
    x = 149,543.10

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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.