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Finding the Fourth Proportional to 331,344.40, 497,081.40 and 131,630.80

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Solution

The fourth proportional to 331,344.40, 497,081.40 and 131,630.80 is: 197,471.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,344.40 : 497,081.40 = 131,630.80 : x
  2. Step 2: Convert to fraction form
    331,344.40/497,081.40 = 131,630.80/x
  3. Step 3: Cross multiply
    331,344.40x = 497,081.40 × 131,630.80
  4. Step 4: Simplify right side
    331,344.40x = 65,431,222,347.12
  5. Step 5: Solve for x
    x = 65,431,222,347.12/331,344.40
  6. Step 6: Final answer
    x = 197,471.94

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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.