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Finding the Fourth Proportional to 213,407.62, 320,104.50 and 63,649.15

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Solution

The fourth proportional to 213,407.62, 320,104.50 and 63,649.15 is: 95,471.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,407.62 : 320,104.50 = 63,649.15 : x
  2. Step 2: Convert to fraction form
    213,407.62/320,104.50 = 63,649.15/x
  3. Step 3: Cross multiply
    213,407.62x = 320,104.50 × 63,649.15
  4. Step 4: Simplify right side
    213,407.62x = 20,374,379,336.18
  5. Step 5: Solve for x
    x = 20,374,379,336.18/213,407.62
  6. Step 6: Final answer
    x = 95,471.66

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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.