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Finding the Fourth Proportional to 217,816.63, 300,456.54 and 137,104.04

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Solution

The fourth proportional to 217,816.63, 300,456.54 and 137,104.04 is: 189,121.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,816.63 : 300,456.54 = 137,104.04 : x
  2. Step 2: Convert to fraction form
    217,816.63/300,456.54 = 137,104.04/x
  3. Step 3: Cross multiply
    217,816.63x = 300,456.54 × 137,104.04
  4. Step 4: Simplify right side
    217,816.63x = 41,193,806,229.56
  5. Step 5: Solve for x
    x = 41,193,806,229.56/217,816.63
  6. Step 6: Final answer
    x = 189,121.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.