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Finding the Fourth Proportional to 215,620.74, 323,493.51 and 89,237.65

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Solution

The fourth proportional to 215,620.74, 323,493.51 and 89,237.65 is: 133,882.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,620.74 : 323,493.51 = 89,237.65 : x
  2. Step 2: Convert to fraction form
    215,620.74/323,493.51 = 89,237.65/x
  3. Step 3: Cross multiply
    215,620.74x = 323,493.51 × 89,237.65
  4. Step 4: Simplify right side
    215,620.74x = 28,867,800,622.65
  5. Step 5: Solve for x
    x = 28,867,800,622.65/215,620.74
  6. Step 6: Final answer
    x = 133,882.30

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1.5x scale

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.