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Finding the Fourth Proportional to 225,685.47, 338,289.58 and 83,439.38

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Solution

The fourth proportional to 225,685.47, 338,289.58 and 83,439.38 is: 125,070.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,685.47 : 338,289.58 = 83,439.38 : x
  2. Step 2: Convert to fraction form
    225,685.47/338,289.58 = 83,439.38/x
  3. Step 3: Cross multiply
    225,685.47x = 338,289.58 × 83,439.38
  4. Step 4: Simplify right side
    225,685.47x = 28,226,673,765.68
  5. Step 5: Solve for x
    x = 28,226,673,765.68/225,685.47
  6. Step 6: Final answer
    x = 125,070.85

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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.