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Finding the Fourth Proportional to 274,364.72, 411,505.57 and 74,700.85

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Solution

The fourth proportional to 274,364.72, 411,505.57 and 74,700.85 is: 112,039.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,364.72 : 411,505.57 = 74,700.85 : x
  2. Step 2: Convert to fraction form
    274,364.72/411,505.57 = 74,700.85/x
  3. Step 3: Cross multiply
    274,364.72x = 411,505.57 × 74,700.85
  4. Step 4: Simplify right side
    274,364.72x = 30,739,814,643.22
  5. Step 5: Solve for x
    x = 30,739,814,643.22/274,364.72
  6. Step 6: Final answer
    x = 112,039.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.