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Finding the Fourth Proportional to 231,325.80, 347,085.90 and 126,220.20

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Solution

The fourth proportional to 231,325.80, 347,085.90 and 126,220.20 is: 189,383.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,325.80 : 347,085.90 = 126,220.20 : x
  2. Step 2: Convert to fraction form
    231,325.80/347,085.90 = 126,220.20/x
  3. Step 3: Cross multiply
    231,325.80x = 347,085.90 × 126,220.20
  4. Step 4: Simplify right side
    231,325.80x = 43,809,251,715.18
  5. Step 5: Solve for x
    x = 43,809,251,715.18/231,325.80
  6. Step 6: Final answer
    x = 189,383.34

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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.