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Finding the Fourth Proportional to 275,832.79, 380,661.01 and 154,974.31

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Solution

The fourth proportional to 275,832.79, 380,661.01 and 154,974.31 is: 213,871.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,832.79 : 380,661.01 = 154,974.31 : x
  2. Step 2: Convert to fraction form
    275,832.79/380,661.01 = 154,974.31/x
  3. Step 3: Cross multiply
    275,832.79x = 380,661.01 × 154,974.31
  4. Step 4: Simplify right side
    275,832.79x = 58,992,679,042.51
  5. Step 5: Solve for x
    x = 58,992,679,042.51/275,832.79
  6. Step 6: Final answer
    x = 213,871.16

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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.