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Finding the Fourth Proportional to 231,630.20, 347,250.90 and 120,822.20

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Solution

The fourth proportional to 231,630.20, 347,250.90 and 120,822.20 is: 181,131.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,630.20 : 347,250.90 = 120,822.20 : x
  2. Step 2: Convert to fraction form
    231,630.20/347,250.90 = 120,822.20/x
  3. Step 3: Cross multiply
    231,630.20x = 347,250.90 × 120,822.20
  4. Step 4: Simplify right side
    231,630.20x = 41,955,617,689.98
  5. Step 5: Solve for x
    x = 41,955,617,689.98/231,630.20
  6. Step 6: Final answer
    x = 181,131.90

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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.