Home / 311,246.08-428,920.32-226,228.48

Finding the Fourth Proportional to 311,246.08, 428,920.32 and 226,228.48

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Solution

The fourth proportional to 311,246.08, 428,920.32 and 226,228.48 is: 311,759.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,246.08 : 428,920.32 = 226,228.48 : x
  2. Step 2: Convert to fraction form
    311,246.08/428,920.32 = 226,228.48/x
  3. Step 3: Cross multiply
    311,246.08x = 428,920.32 × 226,228.48
  4. Step 4: Simplify right side
    311,246.08x = 97,033,992,034.71
  5. Step 5: Solve for x
    x = 97,033,992,034.71/311,246.08
  6. Step 6: Final answer
    x = 311,759.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.