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Finding the Fourth Proportional to 388,565.29, 582,796.90 and 122,327.20

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Solution

The fourth proportional to 388,565.29, 582,796.90 and 122,327.20 is: 183,474.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,565.29 : 582,796.90 = 122,327.20 : x
  2. Step 2: Convert to fraction form
    388,565.29/582,796.90 = 122,327.20/x
  3. Step 3: Cross multiply
    388,565.29x = 582,796.90 × 122,327.20
  4. Step 4: Simplify right side
    388,565.29x = 71,291,912,945.68
  5. Step 5: Solve for x
    x = 71,291,912,945.68/388,565.29
  6. Step 6: Final answer
    x = 183,474.73

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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.