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Finding the Fourth Proportional to 274,553.44, 378,890.58 and 153,693.76

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Solution

The fourth proportional to 274,553.44, 378,890.58 and 153,693.76 is: 212,101.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,553.44 : 378,890.58 = 153,693.76 : x
  2. Step 2: Convert to fraction form
    274,553.44/378,890.58 = 153,693.76/x
  3. Step 3: Cross multiply
    274,553.44x = 378,890.58 × 153,693.76
  4. Step 4: Simplify right side
    274,553.44x = 58,233,117,868.78
  5. Step 5: Solve for x
    x = 58,233,117,868.78/274,553.44
  6. Step 6: Final answer
    x = 212,101.21

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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.