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Finding the Fourth Proportional to 331,694.40, 497,671.20 and 121,348.80

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Solution

The fourth proportional to 331,694.40, 497,671.20 and 121,348.80 is: 182,070.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,694.40 : 497,671.20 = 121,348.80 : x
  2. Step 2: Convert to fraction form
    331,694.40/497,671.20 = 121,348.80/x
  3. Step 3: Cross multiply
    331,694.40x = 497,671.20 × 121,348.80
  4. Step 4: Simplify right side
    331,694.40x = 60,391,802,914.56
  5. Step 5: Solve for x
    x = 60,391,802,914.56/331,694.40
  6. Step 6: Final answer
    x = 182,070.61

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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.