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Finding the Fourth Proportional to 215,363, 323,057.46 and 67,619

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Solution

The fourth proportional to 215,363, 323,057.46 and 67,619 is: 101,432.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,363 : 323,057.46 = 67,619 : x
  2. Step 2: Convert to fraction form
    215,363/323,057.46 = 67,619/x
  3. Step 3: Cross multiply
    215,363x = 323,057.46 × 67,619
  4. Step 4: Simplify right side
    215,363x = 21,844,822,387.74
  5. Step 5: Solve for x
    x = 21,844,822,387.74/215,363
  6. Step 6: Final answer
    x = 101,432.57

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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.