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Finding the Fourth Proportional to 231,520.20, 347,085.90 and 120,712.20

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Solution

The fourth proportional to 231,520.20, 347,085.90 and 120,712.20 is: 180,966.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,520.20 : 347,085.90 = 120,712.20 : x
  2. Step 2: Convert to fraction form
    231,520.20/347,085.90 = 120,712.20/x
  3. Step 3: Cross multiply
    231,520.20x = 347,085.90 × 120,712.20
  4. Step 4: Simplify right side
    231,520.20x = 41,897,502,577.98
  5. Step 5: Solve for x
    x = 41,897,502,577.98/231,520.20
  6. Step 6: Final answer
    x = 180,966.94

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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.