Home / 347,310.16-520,611-136,862.80

Finding the Fourth Proportional to 347,310.16, 520,611 and 136,862.80

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Solution

The fourth proportional to 347,310.16, 520,611 and 136,862.80 is: 205,154.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,310.16 : 520,611 = 136,862.80 : x
  2. Step 2: Convert to fraction form
    347,310.16/520,611 = 136,862.80/x
  3. Step 3: Cross multiply
    347,310.16x = 520,611 × 136,862.80
  4. Step 4: Simplify right side
    347,310.16x = 71,252,279,170.80
  5. Step 5: Solve for x
    x = 71,252,279,170.80/347,310.16
  6. Step 6: Final answer
    x = 205,154.61

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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.