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Finding the Fourth Proportional to 275,999.90, 413,999.85 and 136,031.90

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Solution

The fourth proportional to 275,999.90, 413,999.85 and 136,031.90 is: 204,047.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,999.90 : 413,999.85 = 136,031.90 : x
  2. Step 2: Convert to fraction form
    275,999.90/413,999.85 = 136,031.90/x
  3. Step 3: Cross multiply
    275,999.90x = 413,999.85 × 136,031.90
  4. Step 4: Simplify right side
    275,999.90x = 56,317,186,195.22
  5. Step 5: Solve for x
    x = 56,317,186,195.22/275,999.90
  6. Step 6: Final answer
    x = 204,047.85

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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.