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Finding the Fourth Proportional to 215,382.01, 323,065.01 and 87,293.87

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Solution

The fourth proportional to 215,382.01, 323,065.01 and 87,293.87 is: 130,937.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,382.01 : 323,065.01 = 87,293.87 : x
  2. Step 2: Convert to fraction form
    215,382.01/323,065.01 = 87,293.87/x
  3. Step 3: Cross multiply
    215,382.01x = 323,065.01 × 87,293.87
  4. Step 4: Simplify right side
    215,382.01x = 28,201,596,010.39
  5. Step 5: Solve for x
    x = 28,201,596,010.39/215,382.01
  6. Step 6: Final answer
    x = 130,937.57

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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.