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Finding the Fourth Proportional to 480,833.08, 663,326.20 and 311,121.88

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Solution

The fourth proportional to 480,833.08, 663,326.20 and 311,121.88 is: 429,203.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,833.08 : 663,326.20 = 311,121.88 : x
  2. Step 2: Convert to fraction form
    480,833.08/663,326.20 = 311,121.88/x
  3. Step 3: Cross multiply
    480,833.08x = 663,326.20 × 311,121.88
  4. Step 4: Simplify right side
    480,833.08x = 206,375,294,397.26
  5. Step 5: Solve for x
    x = 206,375,294,397.26/480,833.08
  6. Step 6: Final answer
    x = 429,203.61

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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.