Home / 215,946.78-323,982.42-66,209.16

Finding the Fourth Proportional to 215,946.78, 323,982.42 and 66,209.16

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Solution

The fourth proportional to 215,946.78, 323,982.42 and 66,209.16 is: 99,332.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,946.78 : 323,982.42 = 66,209.16 : x
  2. Step 2: Convert to fraction form
    215,946.78/323,982.42 = 66,209.16/x
  3. Step 3: Cross multiply
    215,946.78x = 323,982.42 × 66,209.16
  4. Step 4: Simplify right side
    215,946.78x = 21,450,604,849.62
  5. Step 5: Solve for x
    x = 21,450,604,849.62/215,946.78
  6. Step 6: Final answer
    x = 99,332.83

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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.