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Finding the Fourth Proportional to 217,388.80, 326,083.20 and 164,900.80

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Solution

The fourth proportional to 217,388.80, 326,083.20 and 164,900.80 is: 247,351.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,388.80 : 326,083.20 = 164,900.80 : x
  2. Step 2: Convert to fraction form
    217,388.80/326,083.20 = 164,900.80/x
  3. Step 3: Cross multiply
    217,388.80x = 326,083.20 × 164,900.80
  4. Step 4: Simplify right side
    217,388.80x = 53,771,380,546.56
  5. Step 5: Solve for x
    x = 53,771,380,546.56/217,388.80
  6. Step 6: Final answer
    x = 247,351.20

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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.