Home / 217,811.20-326,793.60-210,131.20

Finding the Fourth Proportional to 217,811.20, 326,793.60 and 210,131.20

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Solution

The fourth proportional to 217,811.20, 326,793.60 and 210,131.20 is: 315,270.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,811.20 : 326,793.60 = 210,131.20 : x
  2. Step 2: Convert to fraction form
    217,811.20/326,793.60 = 210,131.20/x
  3. Step 3: Cross multiply
    217,811.20x = 326,793.60 × 210,131.20
  4. Step 4: Simplify right side
    217,811.20x = 68,669,531,320.32
  5. Step 5: Solve for x
    x = 68,669,531,320.32/217,811.20
  6. Step 6: Final answer
    x = 315,270.89

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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.