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Finding the Fourth Proportional to 363,560.78, 545,275.50 and 126,971.12

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Solution

The fourth proportional to 363,560.78, 545,275.50 and 126,971.12 is: 190,433.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,560.78 : 545,275.50 = 126,971.12 : x
  2. Step 2: Convert to fraction form
    363,560.78/545,275.50 = 126,971.12/x
  3. Step 3: Cross multiply
    363,560.78x = 545,275.50 × 126,971.12
  4. Step 4: Simplify right side
    363,560.78x = 69,234,240,943.56
  5. Step 5: Solve for x
    x = 69,234,240,943.56/363,560.78
  6. Step 6: Final answer
    x = 190,433.75

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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.