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Finding the Fourth Proportional to 274,376.72, 378,699 and 166,981.28

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Solution

The fourth proportional to 274,376.72, 378,699 and 166,981.28 is: 230,470.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,376.72 : 378,699 = 166,981.28 : x
  2. Step 2: Convert to fraction form
    274,376.72/378,699 = 166,981.28/x
  3. Step 3: Cross multiply
    274,376.72x = 378,699 × 166,981.28
  4. Step 4: Simplify right side
    274,376.72x = 63,235,643,754.72
  5. Step 5: Solve for x
    x = 63,235,643,754.72/274,376.72
  6. Step 6: Final answer
    x = 230,470.15

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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.