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Finding the Fourth Proportional to 217,966.84, 300,793.26 and 121,170.04

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Solution

The fourth proportional to 217,966.84, 300,793.26 and 121,170.04 is: 167,214.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,966.84 : 300,793.26 = 121,170.04 : x
  2. Step 2: Convert to fraction form
    217,966.84/300,793.26 = 121,170.04/x
  3. Step 3: Cross multiply
    217,966.84x = 300,793.26 × 121,170.04
  4. Step 4: Simplify right side
    217,966.84x = 36,447,131,345.93
  5. Step 5: Solve for x
    x = 36,447,131,345.93/217,966.84
  6. Step 6: Final answer
    x = 167,214.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.