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Finding the Fourth Proportional to 438,345.30, 656,999.55 and 227,874.90

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Solution

The fourth proportional to 438,345.30, 656,999.55 and 227,874.90 is: 341,542.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,345.30 : 656,999.55 = 227,874.90 : x
  2. Step 2: Convert to fraction form
    438,345.30/656,999.55 = 227,874.90/x
  3. Step 3: Cross multiply
    438,345.30x = 656,999.55 × 227,874.90
  4. Step 4: Simplify right side
    438,345.30x = 149,713,706,756.30
  5. Step 5: Solve for x
    x = 149,713,706,756.30/438,345.30
  6. Step 6: Final answer
    x = 341,542.86

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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.