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Finding the Fourth Proportional to 347,317.98, 520,625.61 and 137,103.90

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Solution

The fourth proportional to 347,317.98, 520,625.61 and 137,103.90 is: 205,517.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,317.98 : 520,625.61 = 137,103.90 : x
  2. Step 2: Convert to fraction form
    347,317.98/520,625.61 = 137,103.90/x
  3. Step 3: Cross multiply
    347,317.98x = 520,625.61 × 137,103.90
  4. Step 4: Simplify right side
    347,317.98x = 71,379,801,570.88
  5. Step 5: Solve for x
    x = 71,379,801,570.88/347,317.98
  6. Step 6: Final answer
    x = 205,517.15

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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.