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Finding the Fourth Proportional to 275,615.34, 380,371.23 and 154,764.66

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Solution

The fourth proportional to 275,615.34, 380,371.23 and 154,764.66 is: 213,587.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,615.34 : 380,371.23 = 154,764.66 : x
  2. Step 2: Convert to fraction form
    275,615.34/380,371.23 = 154,764.66/x
  3. Step 3: Cross multiply
    275,615.34x = 380,371.23 × 154,764.66
  4. Step 4: Simplify right side
    275,615.34x = 58,868,024,084.73
  5. Step 5: Solve for x
    x = 58,868,024,084.73/275,615.34
  6. Step 6: Final answer
    x = 213,587.62

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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.