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Finding the Fourth Proportional to 215,871.90, 323,879.55 and 95,912.16

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Solution

The fourth proportional to 215,871.90, 323,879.55 and 95,912.16 is: 143,900.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,871.90 : 323,879.55 = 95,912.16 : x
  2. Step 2: Convert to fraction form
    215,871.90/323,879.55 = 95,912.16/x
  3. Step 3: Cross multiply
    215,871.90x = 323,879.55 × 95,912.16
  4. Step 4: Simplify right side
    215,871.90x = 31,063,987,220.33
  5. Step 5: Solve for x
    x = 31,063,987,220.33/215,871.90
  6. Step 6: Final answer
    x = 143,900.10

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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.