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Finding the Fourth Proportional to 424,108.82, 636,162.81 and 108,565.22

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Solution

The fourth proportional to 424,108.82, 636,162.81 and 108,565.22 is: 162,847.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,108.82 : 636,162.81 = 108,565.22 : x
  2. Step 2: Convert to fraction form
    424,108.82/636,162.81 = 108,565.22/x
  3. Step 3: Cross multiply
    424,108.82x = 636,162.81 × 108,565.22
  4. Step 4: Simplify right side
    424,108.82x = 69,065,152,242.65
  5. Step 5: Solve for x
    x = 69,065,152,242.65/424,108.82
  6. Step 6: Final answer
    x = 162,847.72

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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.