Home / 659,231.10-988,846.65-215,999.10

Finding the Fourth Proportional to 659,231.10, 988,846.65 and 215,999.10

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Solution

The fourth proportional to 659,231.10, 988,846.65 and 215,999.10 is: 323,998.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,231.10 : 988,846.65 = 215,999.10 : x
  2. Step 2: Convert to fraction form
    659,231.10/988,846.65 = 215,999.10/x
  3. Step 3: Cross multiply
    659,231.10x = 988,846.65 × 215,999.10
  4. Step 4: Simplify right side
    659,231.10x = 213,589,986,438.02
  5. Step 5: Solve for x
    x = 213,589,986,438.02/659,231.10
  6. Step 6: Final answer
    x = 323,998.65

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Double scale
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Similar ratio
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1.5x scale

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.