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Finding the Fourth Proportional to 252,900.81, 379,024.19 and 189,221.31

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Solution

The fourth proportional to 252,900.81, 379,024.19 and 189,221.31 is: 283,587.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,900.81 : 379,024.19 = 189,221.31 : x
  2. Step 2: Convert to fraction form
    252,900.81/379,024.19 = 189,221.31/x
  3. Step 3: Cross multiply
    252,900.81x = 379,024.19 × 189,221.31
  4. Step 4: Simplify right side
    252,900.81x = 71,719,453,753.49
  5. Step 5: Solve for x
    x = 71,719,453,753.49/252,900.81
  6. Step 6: Final answer
    x = 283,587.28

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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.