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Finding the Fourth Proportional to 215,549.27, 323,323.97 and 65,790.39

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Solution

The fourth proportional to 215,549.27, 323,323.97 and 65,790.39 is: 98,685.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,549.27 : 323,323.97 = 65,790.39 : x
  2. Step 2: Convert to fraction form
    215,549.27/323,323.97 = 65,790.39/x
  3. Step 3: Cross multiply
    215,549.27x = 323,323.97 × 65,790.39
  4. Step 4: Simplify right side
    215,549.27x = 21,271,609,753.70
  5. Step 5: Solve for x
    x = 21,271,609,753.70/215,549.27
  6. Step 6: Final answer
    x = 98,685.61

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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.