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Finding the Fourth Proportional to 275,590.97, 380,302.68 and 153,091.29

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Solution

The fourth proportional to 275,590.97, 380,302.68 and 153,091.29 is: 211,258.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,590.97 : 380,302.68 = 153,091.29 : x
  2. Step 2: Convert to fraction form
    275,590.97/380,302.68 = 153,091.29/x
  3. Step 3: Cross multiply
    275,590.97x = 380,302.68 × 153,091.29
  4. Step 4: Simplify right side
    275,590.97x = 58,221,027,871.66
  5. Step 5: Solve for x
    x = 58,221,027,871.66/275,590.97
  6. Step 6: Final answer
    x = 211,258.84

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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.