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Finding the Fourth Proportional to 347,172.59, 520,755.09 and 263,446.94

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Solution

The fourth proportional to 347,172.59, 520,755.09 and 263,446.94 is: 395,167.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,172.59 : 520,755.09 = 263,446.94 : x
  2. Step 2: Convert to fraction form
    347,172.59/520,755.09 = 263,446.94/x
  3. Step 3: Cross multiply
    347,172.59x = 520,755.09 × 263,446.94
  4. Step 4: Simplify right side
    347,172.59x = 137,191,332,346.15
  5. Step 5: Solve for x
    x = 137,191,332,346.15/347,172.59
  6. Step 6: Final answer
    x = 395,167.53

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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.