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Finding the Fourth Proportional to 274,278.24, 378,539 and 153,426.24

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Solution

The fourth proportional to 274,278.24, 378,539 and 153,426.24 is: 211,747.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,278.24 : 378,539 = 153,426.24 : x
  2. Step 2: Convert to fraction form
    274,278.24/378,539 = 153,426.24/x
  3. Step 3: Cross multiply
    274,278.24x = 378,539 × 153,426.24
  4. Step 4: Simplify right side
    274,278.24x = 58,077,815,463.36
  5. Step 5: Solve for x
    x = 58,077,815,463.36/274,278.24
  6. Step 6: Final answer
    x = 211,747.81

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1.5x scale

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.