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Finding the Fourth Proportional to 215,115.98, 322,691.04 and 65,369.34

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Solution

The fourth proportional to 215,115.98, 322,691.04 and 65,369.34 is: 98,059.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,115.98 : 322,691.04 = 65,369.34 : x
  2. Step 2: Convert to fraction form
    215,115.98/322,691.04 = 65,369.34/x
  3. Step 3: Cross multiply
    215,115.98x = 322,691.04 × 65,369.34
  4. Step 4: Simplify right side
    215,115.98x = 21,094,100,308.71
  5. Step 5: Solve for x
    x = 21,094,100,308.71/215,115.98
  6. Step 6: Final answer
    x = 98,059.20

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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.