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Finding the Fourth Proportional to 199,488.80, 299,233.20 and 88,680.80

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Solution

The fourth proportional to 199,488.80, 299,233.20 and 88,680.80 is: 133,021.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,488.80 : 299,233.20 = 88,680.80 : x
  2. Step 2: Convert to fraction form
    199,488.80/299,233.20 = 88,680.80/x
  3. Step 3: Cross multiply
    199,488.80x = 299,233.20 × 88,680.80
  4. Step 4: Simplify right side
    199,488.80x = 26,536,239,562.56
  5. Step 5: Solve for x
    x = 26,536,239,562.56/199,488.80
  6. Step 6: Final answer
    x = 133,021.20

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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.