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Finding the Fourth Proportional to 275,577.40, 380,267.43 and 154,731.97

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Solution

The fourth proportional to 275,577.40, 380,267.43 and 154,731.97 is: 213,513.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,577.40 : 380,267.43 = 154,731.97 : x
  2. Step 2: Convert to fraction form
    275,577.40/380,267.43 = 154,731.97/x
  3. Step 3: Cross multiply
    275,577.40x = 380,267.43 × 154,731.97
  4. Step 4: Simplify right side
    275,577.40x = 58,839,528,570.74
  5. Step 5: Solve for x
    x = 58,839,528,570.74/275,577.40
  6. Step 6: Final answer
    x = 213,513.62

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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.