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Finding the Fourth Proportional to 331,693.60, 497,540.40 and 121,352.80

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Solution

The fourth proportional to 331,693.60, 497,540.40 and 121,352.80 is: 182,029.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,693.60 : 497,540.40 = 121,352.80 : x
  2. Step 2: Convert to fraction form
    331,693.60/497,540.40 = 121,352.80/x
  3. Step 3: Cross multiply
    331,693.60x = 497,540.40 × 121,352.80
  4. Step 4: Simplify right side
    331,693.60x = 60,377,920,653.12
  5. Step 5: Solve for x
    x = 60,377,920,653.12/331,693.60
  6. Step 6: Final answer
    x = 182,029.20

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1.5x scale

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.