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Finding the Fourth Proportional to 217,920.75, 300,661.52 and 132,995.31

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Solution

The fourth proportional to 217,920.75, 300,661.52 and 132,995.31 is: 183,491.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,920.75 : 300,661.52 = 132,995.31 : x
  2. Step 2: Convert to fraction form
    217,920.75/300,661.52 = 132,995.31/x
  3. Step 3: Cross multiply
    217,920.75x = 300,661.52 × 132,995.31
  4. Step 4: Simplify right side
    217,920.75x = 39,986,571,392.49
  5. Step 5: Solve for x
    x = 39,986,571,392.49/217,920.75
  6. Step 6: Final answer
    x = 183,491.34

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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.