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Finding the Fourth Proportional to 361,400.50, 541,995.33 and 121,487.28

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Solution

The fourth proportional to 361,400.50, 541,995.33 and 121,487.28 is: 182,195.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,400.50 : 541,995.33 = 121,487.28 : x
  2. Step 2: Convert to fraction form
    361,400.50/541,995.33 = 121,487.28/x
  3. Step 3: Cross multiply
    361,400.50x = 541,995.33 × 121,487.28
  4. Step 4: Simplify right side
    361,400.50x = 65,845,538,098.99
  5. Step 5: Solve for x
    x = 65,845,538,098.99/361,400.50
  6. Step 6: Final answer
    x = 182,195.48

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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.