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Finding the Fourth Proportional to 275,671.62, 380,425.40 and 154,818

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Solution

The fourth proportional to 275,671.62, 380,425.40 and 154,818 is: 213,648.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,671.62 : 380,425.40 = 154,818 : x
  2. Step 2: Convert to fraction form
    275,671.62/380,425.40 = 154,818/x
  3. Step 3: Cross multiply
    275,671.62x = 380,425.40 × 154,818
  4. Step 4: Simplify right side
    275,671.62x = 58,896,698,803.11
  5. Step 5: Solve for x
    x = 58,896,698,803.11/275,671.62
  6. Step 6: Final answer
    x = 213,648.03

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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.