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Finding the Fourth Proportional to 305,149.31, 457,800.06 and 215,367.39

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Solution

The fourth proportional to 305,149.31, 457,800.06 and 215,367.39 is: 323,104.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,149.31 : 457,800.06 = 215,367.39 : x
  2. Step 2: Convert to fraction form
    305,149.31/457,800.06 = 215,367.39/x
  3. Step 3: Cross multiply
    305,149.31x = 457,800.06 × 215,367.39
  4. Step 4: Simplify right side
    305,149.31x = 98,595,202,381.12
  5. Step 5: Solve for x
    x = 98,595,202,381.12/305,149.31
  6. Step 6: Final answer
    x = 323,104.79

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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.