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Finding the Fourth Proportional to 318,147.96, 438,998.46 and 187,247.77

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Solution

The fourth proportional to 318,147.96, 438,998.46 and 187,247.77 is: 258,375.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,147.96 : 438,998.46 = 187,247.77 : x
  2. Step 2: Convert to fraction form
    318,147.96/438,998.46 = 187,247.77/x
  3. Step 3: Cross multiply
    318,147.96x = 438,998.46 × 187,247.77
  4. Step 4: Simplify right side
    318,147.96x = 82,201,482,668.43
  5. Step 5: Solve for x
    x = 82,201,482,668.43/318,147.96
  6. Step 6: Final answer
    x = 258,375.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.