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Finding the Fourth Proportional to 323,781.69, 486,094.91 and 217,641.12

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Solution

The fourth proportional to 323,781.69, 486,094.91 and 217,641.12 is: 326,745.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,781.69 : 486,094.91 = 217,641.12 : x
  2. Step 2: Convert to fraction form
    323,781.69/486,094.91 = 217,641.12/x
  3. Step 3: Cross multiply
    323,781.69x = 486,094.91 × 217,641.12
  4. Step 4: Simplify right side
    323,781.69x = 105,794,239,550.49
  5. Step 5: Solve for x
    x = 105,794,239,550.49/323,781.69
  6. Step 6: Final answer
    x = 326,745.59

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1.5x scale

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.