Home / 217,020.40-324,947.40-137,705.20

Finding the Fourth Proportional to 217,020.40, 324,947.40 and 137,705.20

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Solution

The fourth proportional to 217,020.40, 324,947.40 and 137,705.20 is: 206,187.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,020.40 : 324,947.40 = 137,705.20 : x
  2. Step 2: Convert to fraction form
    217,020.40/324,947.40 = 137,705.20/x
  3. Step 3: Cross multiply
    217,020.40x = 324,947.40 × 137,705.20
  4. Step 4: Simplify right side
    217,020.40x = 44,746,946,706.48
  5. Step 5: Solve for x
    x = 44,746,946,706.48/217,020.40
  6. Step 6: Final answer
    x = 206,187.74

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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.