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Finding the Fourth Proportional to 215,352.48, 323,079.84 and 73,207.20

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Solution

The fourth proportional to 215,352.48, 323,079.84 and 73,207.20 is: 109,828.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,352.48 : 323,079.84 = 73,207.20 : x
  2. Step 2: Convert to fraction form
    215,352.48/323,079.84 = 73,207.20/x
  3. Step 3: Cross multiply
    215,352.48x = 323,079.84 × 73,207.20
  4. Step 4: Simplify right side
    215,352.48x = 23,651,770,462.85
  5. Step 5: Solve for x
    x = 23,651,770,462.85/215,352.48
  6. Step 6: Final answer
    x = 109,828.18

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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.