Home / 331,821.60-497,732.40-121,480.80

Finding the Fourth Proportional to 331,821.60, 497,732.40 and 121,480.80

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Solution

The fourth proportional to 331,821.60, 497,732.40 and 121,480.80 is: 182,221.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,821.60 : 497,732.40 = 121,480.80 : x
  2. Step 2: Convert to fraction form
    331,821.60/497,732.40 = 121,480.80/x
  3. Step 3: Cross multiply
    331,821.60x = 497,732.40 × 121,480.80
  4. Step 4: Simplify right side
    331,821.60x = 60,464,930,137.92
  5. Step 5: Solve for x
    x = 60,464,930,137.92/331,821.60
  6. Step 6: Final answer
    x = 182,221.20

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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.