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Finding the Fourth Proportional to 217,751.92, 300,521.78 and 127,130.16

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Solution

The fourth proportional to 217,751.92, 300,521.78 and 127,130.16 is: 175,453.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,751.92 : 300,521.78 = 127,130.16 : x
  2. Step 2: Convert to fraction form
    217,751.92/300,521.78 = 127,130.16/x
  3. Step 3: Cross multiply
    217,751.92x = 300,521.78 × 127,130.16
  4. Step 4: Simplify right side
    217,751.92x = 38,205,381,974.88
  5. Step 5: Solve for x
    x = 38,205,381,974.88/217,751.92
  6. Step 6: Final answer
    x = 175,453.71

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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.