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Finding the Fourth Proportional to 275,374.71, 380,016.23 and 154,516.55

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Solution

The fourth proportional to 275,374.71, 380,016.23 and 154,516.55 is: 213,232.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,374.71 : 380,016.23 = 154,516.55 : x
  2. Step 2: Convert to fraction form
    275,374.71/380,016.23 = 154,516.55/x
  3. Step 3: Cross multiply
    275,374.71x = 380,016.23 × 154,516.55
  4. Step 4: Simplify right side
    275,374.71x = 58,718,794,130.94
  5. Step 5: Solve for x
    x = 58,718,794,130.94/275,374.71
  6. Step 6: Final answer
    x = 213,232.34

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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.