Home / 215,439.90-323,171.94-65,685.06

Finding the Fourth Proportional to 215,439.90, 323,171.94 and 65,685.06

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Solution

The fourth proportional to 215,439.90, 323,171.94 and 65,685.06 is: 98,531.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,439.90 : 323,171.94 = 65,685.06 : x
  2. Step 2: Convert to fraction form
    215,439.90/323,171.94 = 65,685.06/x
  3. Step 3: Cross multiply
    215,439.90x = 323,171.94 × 65,685.06
  4. Step 4: Simplify right side
    215,439.90x = 21,227,568,269.22
  5. Step 5: Solve for x
    x = 21,227,568,269.22/215,439.90
  6. Step 6: Final answer
    x = 98,531.28

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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.