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Finding the Fourth Proportional to 275,203.97, 379,780 and 152,695.21

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Solution

The fourth proportional to 275,203.97, 379,780 and 152,695.21 is: 210,718.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,203.97 : 379,780 = 152,695.21 : x
  2. Step 2: Convert to fraction form
    275,203.97/379,780 = 152,695.21/x
  3. Step 3: Cross multiply
    275,203.97x = 379,780 × 152,695.21
  4. Step 4: Simplify right side
    275,203.97x = 57,990,586,853.80
  5. Step 5: Solve for x
    x = 57,990,586,853.80/275,203.97
  6. Step 6: Final answer
    x = 210,718.57

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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.