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Finding the Fourth Proportional to 659,080.20, 988,562.70 and 215,848.20

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Solution

The fourth proportional to 659,080.20, 988,562.70 and 215,848.20 is: 323,753.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,080.20 : 988,562.70 = 215,848.20 : x
  2. Step 2: Convert to fraction form
    659,080.20/988,562.70 = 215,848.20/x
  3. Step 3: Cross multiply
    659,080.20x = 988,562.70 × 215,848.20
  4. Step 4: Simplify right side
    659,080.20x = 213,379,479,382.14
  5. Step 5: Solve for x
    x = 213,379,479,382.14/659,080.20
  6. Step 6: Final answer
    x = 323,753.44

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Double scale
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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.