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Finding the Fourth Proportional to 543,608.20, 815,412.03 and 169,631.20

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Solution

The fourth proportional to 543,608.20, 815,412.03 and 169,631.20 is: 254,446.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,608.20 : 815,412.03 = 169,631.20 : x
  2. Step 2: Convert to fraction form
    543,608.20/815,412.03 = 169,631.20/x
  3. Step 3: Cross multiply
    543,608.20x = 815,412.03 × 169,631.20
  4. Step 4: Simplify right side
    543,608.20x = 138,319,321,143.34
  5. Step 5: Solve for x
    x = 138,319,321,143.34/543,608.20
  6. Step 6: Final answer
    x = 254,446.72

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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.