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Finding the Fourth Proportional to 479,065.15, 661,081.36 and 275,149.27

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Solution

The fourth proportional to 479,065.15, 661,081.36 and 275,149.27 is: 379,689.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,065.15 : 661,081.36 = 275,149.27 : x
  2. Step 2: Convert to fraction form
    479,065.15/661,081.36 = 275,149.27/x
  3. Step 3: Cross multiply
    479,065.15x = 661,081.36 × 275,149.27
  4. Step 4: Simplify right side
    479,065.15x = 181,896,053,614.61
  5. Step 5: Solve for x
    x = 181,896,053,614.61/479,065.15
  6. Step 6: Final answer
    x = 379,689.60

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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.