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Finding the Fourth Proportional to 247,918, 371,729.12 and 98,179.76

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Solution

The fourth proportional to 247,918, 371,729.12 and 98,179.76 is: 147,211.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,918 : 371,729.12 = 98,179.76 : x
  2. Step 2: Convert to fraction form
    247,918/371,729.12 = 98,179.76/x
  3. Step 3: Cross multiply
    247,918x = 371,729.12 × 98,179.76
  4. Step 4: Simplify right side
    247,918x = 36,496,275,786.61
  5. Step 5: Solve for x
    x = 36,496,275,786.61/247,918
  6. Step 6: Final answer
    x = 147,211.08

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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.