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Finding the Fourth Proportional to 231,194.48, 318,920.64 and 188,220.20

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Solution

The fourth proportional to 231,194.48, 318,920.64 and 188,220.20 is: 259,639.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,194.48 : 318,920.64 = 188,220.20 : x
  2. Step 2: Convert to fraction form
    231,194.48/318,920.64 = 188,220.20/x
  3. Step 3: Cross multiply
    231,194.48x = 318,920.64 × 188,220.20
  4. Step 4: Simplify right side
    231,194.48x = 60,027,306,644.93
  5. Step 5: Solve for x
    x = 60,027,306,644.93/231,194.48
  6. Step 6: Final answer
    x = 259,639.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.