Home / 217,521.25-325,895.65-90,882.71

Finding the Fourth Proportional to 217,521.25, 325,895.65 and 90,882.71

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Solution

The fourth proportional to 217,521.25, 325,895.65 and 90,882.71 is: 136,162.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,521.25 : 325,895.65 = 90,882.71 : x
  2. Step 2: Convert to fraction form
    217,521.25/325,895.65 = 90,882.71/x
  3. Step 3: Cross multiply
    217,521.25x = 325,895.65 × 90,882.71
  4. Step 4: Simplify right side
    217,521.25x = 29,618,279,725.85
  5. Step 5: Solve for x
    x = 29,618,279,725.85/217,521.25
  6. Step 6: Final answer
    x = 136,162.70

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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.