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Finding the Fourth Proportional to 335,315.40, 501,660.90 and 217,217.40

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Solution

The fourth proportional to 335,315.40, 501,660.90 and 217,217.40 is: 324,976.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,315.40 : 501,660.90 = 217,217.40 : x
  2. Step 2: Convert to fraction form
    335,315.40/501,660.90 = 217,217.40/x
  3. Step 3: Cross multiply
    335,315.40x = 501,660.90 × 217,217.40
  4. Step 4: Simplify right side
    335,315.40x = 108,969,476,379.66
  5. Step 5: Solve for x
    x = 108,969,476,379.66/335,315.40
  6. Step 6: Final answer
    x = 324,976.06

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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.