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Finding the Fourth Proportional to 215,377.12, 323,111.76 and 65,629.48

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Solution

The fourth proportional to 215,377.12, 323,111.76 and 65,629.48 is: 98,458.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,377.12 : 323,111.76 = 65,629.48 : x
  2. Step 2: Convert to fraction form
    215,377.12/323,111.76 = 65,629.48/x
  3. Step 3: Cross multiply
    215,377.12x = 323,111.76 × 65,629.48
  4. Step 4: Simplify right side
    215,377.12x = 21,205,656,790.68
  5. Step 5: Solve for x
    x = 21,205,656,790.68/215,377.12
  6. Step 6: Final answer
    x = 98,458.26

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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.