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Finding the Fourth Proportional to 215,598.80, 323,446.68 and 65,826.56

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Solution

The fourth proportional to 215,598.80, 323,446.68 and 65,826.56 is: 98,754.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,598.80 : 323,446.68 = 65,826.56 : x
  2. Step 2: Convert to fraction form
    215,598.80/323,446.68 = 65,826.56/x
  3. Step 3: Cross multiply
    215,598.80x = 323,446.68 × 65,826.56
  4. Step 4: Simplify right side
    215,598.80x = 21,291,382,287.82
  5. Step 5: Solve for x
    x = 21,291,382,287.82/215,598.80
  6. Step 6: Final answer
    x = 98,754.64

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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.