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Finding the Fourth Proportional to 543,359.08, 815,081.82 and 169,385.32

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Solution

The fourth proportional to 543,359.08, 815,081.82 and 169,385.32 is: 254,091.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,359.08 : 815,081.82 = 169,385.32 : x
  2. Step 2: Convert to fraction form
    543,359.08/815,081.82 = 169,385.32/x
  3. Step 3: Cross multiply
    543,359.08x = 815,081.82 × 169,385.32
  4. Step 4: Simplify right side
    543,359.08x = 138,062,894,906.88
  5. Step 5: Solve for x
    x = 138,062,894,906.88/543,359.08
  6. Step 6: Final answer
    x = 254,091.45

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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.