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Finding the Fourth Proportional to 215,597.80, 323,445.18 and 65,825.56

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Solution

The fourth proportional to 215,597.80, 323,445.18 and 65,825.56 is: 98,753.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,597.80 : 323,445.18 = 65,825.56 : x
  2. Step 2: Convert to fraction form
    215,597.80/323,445.18 = 65,825.56/x
  3. Step 3: Cross multiply
    215,597.80x = 323,445.18 × 65,825.56
  4. Step 4: Simplify right side
    215,597.80x = 21,290,960,102.80
  5. Step 5: Solve for x
    x = 21,290,960,102.80/215,597.80
  6. Step 6: Final answer
    x = 98,753.14

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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.