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Finding the Fourth Proportional to 331,544.70, 497,511.45 and 121,203.90

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Solution

The fourth proportional to 331,544.70, 497,511.45 and 121,203.90 is: 181,876.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,544.70 : 497,511.45 = 121,203.90 : x
  2. Step 2: Convert to fraction form
    331,544.70/497,511.45 = 121,203.90/x
  3. Step 3: Cross multiply
    331,544.70x = 497,511.45 × 121,203.90
  4. Step 4: Simplify right side
    331,544.70x = 60,300,328,034.66
  5. Step 5: Solve for x
    x = 60,300,328,034.66/331,544.70
  6. Step 6: Final answer
    x = 181,876.92

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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.