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Finding the Fourth Proportional to 485,042.72, 669,379.65 and 270,182.93

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Solution

The fourth proportional to 485,042.72, 669,379.65 and 270,182.93 is: 372,863.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,042.72 : 669,379.65 = 270,182.93 : x
  2. Step 2: Convert to fraction form
    485,042.72/669,379.65 = 270,182.93/x
  3. Step 3: Cross multiply
    485,042.72x = 669,379.65 × 270,182.93
  4. Step 4: Simplify right side
    485,042.72x = 180,854,950,759.29
  5. Step 5: Solve for x
    x = 180,854,950,759.29/485,042.72
  6. Step 6: Final answer
    x = 372,863.97

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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.