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Finding the Fourth Proportional to 247,980.84, 372,006.28 and 79,461.76

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Solution

The fourth proportional to 247,980.84, 372,006.28 and 79,461.76 is: 119,203.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,980.84 : 372,006.28 = 79,461.76 : x
  2. Step 2: Convert to fraction form
    247,980.84/372,006.28 = 79,461.76/x
  3. Step 3: Cross multiply
    247,980.84x = 372,006.28 × 79,461.76
  4. Step 4: Simplify right side
    247,980.84x = 29,560,273,739.85
  5. Step 5: Solve for x
    x = 29,560,273,739.85/247,980.84
  6. Step 6: Final answer
    x = 119,203.86

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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.