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Finding the Fourth Proportional to 394,363.69, 544,221.89 and 224,613.61

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Solution

The fourth proportional to 394,363.69, 544,221.89 and 224,613.61 is: 309,966.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,363.69 : 544,221.89 = 224,613.61 : x
  2. Step 2: Convert to fraction form
    394,363.69/544,221.89 = 224,613.61/x
  3. Step 3: Cross multiply
    394,363.69x = 544,221.89 × 224,613.61
  4. Step 4: Simplify right side
    394,363.69x = 122,239,641,712.60
  5. Step 5: Solve for x
    x = 122,239,641,712.60/394,363.69
  6. Step 6: Final answer
    x = 309,966.78

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1.5x scale

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.