Home / 261,142.20-391,842.90-148,908.60

Finding the Fourth Proportional to 261,142.20, 391,842.90 and 148,908.60

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Solution

The fourth proportional to 261,142.20, 391,842.90 and 148,908.60 is: 223,436.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,142.20 : 391,842.90 = 148,908.60 : x
  2. Step 2: Convert to fraction form
    261,142.20/391,842.90 = 148,908.60/x
  3. Step 3: Cross multiply
    261,142.20x = 391,842.90 × 148,908.60
  4. Step 4: Simplify right side
    261,142.20x = 58,348,777,658.94
  5. Step 5: Solve for x
    x = 58,348,777,658.94/261,142.20
  6. Step 6: Final answer
    x = 223,436.80

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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.