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Finding the Fourth Proportional to 274,450.68, 378,747.08 and 153,605.28

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Solution

The fourth proportional to 274,450.68, 378,747.08 and 153,605.28 is: 211,978.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,450.68 : 378,747.08 = 153,605.28 : x
  2. Step 2: Convert to fraction form
    274,450.68/378,747.08 = 153,605.28/x
  3. Step 3: Cross multiply
    274,450.68x = 378,747.08 × 153,605.28
  4. Step 4: Simplify right side
    274,450.68x = 58,177,551,272.58
  5. Step 5: Solve for x
    x = 58,177,551,272.58/274,450.68
  6. Step 6: Final answer
    x = 211,978.16

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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.