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Finding the Fourth Proportional to 215,108.67, 322,810.02 and 74,867.30

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Solution

The fourth proportional to 215,108.67, 322,810.02 and 74,867.30 is: 112,352.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,108.67 : 322,810.02 = 74,867.30 : x
  2. Step 2: Convert to fraction form
    215,108.67/322,810.02 = 74,867.30/x
  3. Step 3: Cross multiply
    215,108.67x = 322,810.02 × 74,867.30
  4. Step 4: Simplify right side
    215,108.67x = 24,167,912,996.30
  5. Step 5: Solve for x
    x = 24,167,912,996.30/215,108.67
  6. Step 6: Final answer
    x = 112,352.11

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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.