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Finding the Fourth Proportional to 231,550.20, 347,130.90 and 120,742.20

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Solution

The fourth proportional to 231,550.20, 347,130.90 and 120,742.20 is: 181,011.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,550.20 : 347,130.90 = 120,742.20 : x
  2. Step 2: Convert to fraction form
    231,550.20/347,130.90 = 120,742.20/x
  3. Step 3: Cross multiply
    231,550.20x = 347,130.90 × 120,742.20
  4. Step 4: Simplify right side
    231,550.20x = 41,913,348,553.98
  5. Step 5: Solve for x
    x = 41,913,348,553.98/231,550.20
  6. Step 6: Final answer
    x = 181,011.93

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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.