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Finding the Fourth Proportional to 347,318.98, 520,627.11 and 137,104.90

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Solution

The fourth proportional to 347,318.98, 520,627.11 and 137,104.90 is: 205,518.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,318.98 : 520,627.11 = 137,104.90 : x
  2. Step 2: Convert to fraction form
    347,318.98/520,627.11 = 137,104.90/x
  3. Step 3: Cross multiply
    347,318.98x = 520,627.11 × 137,104.90
  4. Step 4: Simplify right side
    347,318.98x = 71,380,527,853.84
  5. Step 5: Solve for x
    x = 71,380,527,853.84/347,318.98
  6. Step 6: Final answer
    x = 205,518.65

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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.