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Finding the Fourth Proportional to 552,641.20, 829,399.20 and 215,843.20

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Solution

The fourth proportional to 552,641.20, 829,399.20 and 215,843.20 is: 323,935.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,641.20 : 829,399.20 = 215,843.20 : x
  2. Step 2: Convert to fraction form
    552,641.20/829,399.20 = 215,843.20/x
  3. Step 3: Cross multiply
    552,641.20x = 829,399.20 × 215,843.20
  4. Step 4: Simplify right side
    552,641.20x = 179,020,177,405.44
  5. Step 5: Solve for x
    x = 179,020,177,405.44/552,641.20
  6. Step 6: Final answer
    x = 323,935.63

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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.