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Finding the Fourth Proportional to 225,630.09, 338,357.64 and 120,391.65

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Solution

The fourth proportional to 225,630.09, 338,357.64 and 120,391.65 is: 180,540.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,630.09 : 338,357.64 = 120,391.65 : x
  2. Step 2: Convert to fraction form
    225,630.09/338,357.64 = 120,391.65/x
  3. Step 3: Cross multiply
    225,630.09x = 338,357.64 × 120,391.65
  4. Step 4: Simplify right side
    225,630.09x = 40,735,434,569.71
  5. Step 5: Solve for x
    x = 40,735,434,569.71/225,630.09
  6. Step 6: Final answer
    x = 180,540.79

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1.5x scale

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.