Home / 258,898.28-388,385.69-132,609.96

Finding the Fourth Proportional to 258,898.28, 388,385.69 and 132,609.96

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Solution

The fourth proportional to 258,898.28, 388,385.69 and 132,609.96 is: 198,934.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,898.28 : 388,385.69 = 132,609.96 : x
  2. Step 2: Convert to fraction form
    258,898.28/388,385.69 = 132,609.96/x
  3. Step 3: Cross multiply
    258,898.28x = 388,385.69 × 132,609.96
  4. Step 4: Simplify right side
    258,898.28x = 51,503,810,152.42
  5. Step 5: Solve for x
    x = 51,503,810,152.42/258,898.28
  6. Step 6: Final answer
    x = 198,934.54

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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.