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Finding the Fourth Proportional to 478,825.28, 660,786.21 and 261,034.10

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Solution

The fourth proportional to 478,825.28, 660,786.21 and 261,034.10 is: 360,231.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,825.28 : 660,786.21 = 261,034.10 : x
  2. Step 2: Convert to fraction form
    478,825.28/660,786.21 = 261,034.10/x
  3. Step 3: Cross multiply
    478,825.28x = 660,786.21 × 261,034.10
  4. Step 4: Simplify right side
    478,825.28x = 172,487,729,010.66
  5. Step 5: Solve for x
    x = 172,487,729,010.66/478,825.28
  6. Step 6: Final answer
    x = 360,231.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.