Home / 215,840.40-324,052.20-137,108.40

Finding the Fourth Proportional to 215,840.40, 324,052.20 and 137,108.40

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Solution

The fourth proportional to 215,840.40, 324,052.20 and 137,108.40 is: 205,847.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,840.40 : 324,052.20 = 137,108.40 : x
  2. Step 2: Convert to fraction form
    215,840.40/324,052.20 = 137,108.40/x
  3. Step 3: Cross multiply
    215,840.40x = 324,052.20 × 137,108.40
  4. Step 4: Simplify right side
    215,840.40x = 44,430,278,658.48
  5. Step 5: Solve for x
    x = 44,430,278,658.48/215,840.40
  6. Step 6: Final answer
    x = 205,847.83

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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.