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Finding the Fourth Proportional to 231,625.62, 319,640.31 and 131,023.62

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Solution

The fourth proportional to 231,625.62, 319,640.31 and 131,023.62 is: 180,810.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,625.62 : 319,640.31 = 131,023.62 : x
  2. Step 2: Convert to fraction form
    231,625.62/319,640.31 = 131,023.62/x
  3. Step 3: Cross multiply
    231,625.62x = 319,640.31 × 131,023.62
  4. Step 4: Simplify right side
    231,625.62x = 41,880,430,514.12
  5. Step 5: Solve for x
    x = 41,880,430,514.12/231,625.62
  6. Step 6: Final answer
    x = 180,810.87

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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.