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Finding the Fourth Proportional to 575,098.20, 861,999.30 and 275,722.20

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Solution

The fourth proportional to 575,098.20, 861,999.30 and 275,722.20 is: 413,272.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,098.20 : 861,999.30 = 275,722.20 : x
  2. Step 2: Convert to fraction form
    575,098.20/861,999.30 = 275,722.20/x
  3. Step 3: Cross multiply
    575,098.20x = 861,999.30 × 275,722.20
  4. Step 4: Simplify right side
    575,098.20x = 237,672,343,394.46
  5. Step 5: Solve for x
    x = 237,672,343,394.46/575,098.20
  6. Step 6: Final answer
    x = 413,272.63

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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.