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Finding the Fourth Proportional to 215,212.40, 322,613.80 and 167,801.20

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Solution

The fourth proportional to 215,212.40, 322,613.80 and 167,801.20 is: 251,542.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,212.40 : 322,613.80 = 167,801.20 : x
  2. Step 2: Convert to fraction form
    215,212.40/322,613.80 = 167,801.20/x
  3. Step 3: Cross multiply
    215,212.40x = 322,613.80 × 167,801.20
  4. Step 4: Simplify right side
    215,212.40x = 54,134,982,776.56
  5. Step 5: Solve for x
    x = 54,134,982,776.56/215,212.40
  6. Step 6: Final answer
    x = 251,542.12

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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.