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Finding the Fourth Proportional to 274,593.82, 378,921.16 and 153,714.68

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Solution

The fourth proportional to 274,593.82, 378,921.16 and 153,714.68 is: 212,116.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,593.82 : 378,921.16 = 153,714.68 : x
  2. Step 2: Convert to fraction form
    274,593.82/378,921.16 = 153,714.68/x
  3. Step 3: Cross multiply
    274,593.82x = 378,921.16 × 153,714.68
  4. Step 4: Simplify right side
    274,593.82x = 58,245,744,854.63
  5. Step 5: Solve for x
    x = 58,245,744,854.63/274,593.82
  6. Step 6: Final answer
    x = 212,116.01

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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.