Home / 215,813.20-323,707.86-66,053.38

Finding the Fourth Proportional to 215,813.20, 323,707.86 and 66,053.38

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Solution

The fourth proportional to 215,813.20, 323,707.86 and 66,053.38 is: 99,076.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,813.20 : 323,707.86 = 66,053.38 : x
  2. Step 2: Convert to fraction form
    215,813.20/323,707.86 = 66,053.38/x
  3. Step 3: Cross multiply
    215,813.20x = 323,707.86 × 66,053.38
  4. Step 4: Simplify right side
    215,813.20x = 21,381,998,285.57
  5. Step 5: Solve for x
    x = 21,381,998,285.57/215,813.20
  6. Step 6: Final answer
    x = 99,076.42

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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.