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Finding the Fourth Proportional to 274,538.05, 411,807.08 and 264,040.45

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Solution

The fourth proportional to 274,538.05, 411,807.08 and 264,040.45 is: 396,060.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,538.05 : 411,807.08 = 264,040.45 : x
  2. Step 2: Convert to fraction form
    274,538.05/411,807.08 = 264,040.45/x
  3. Step 3: Cross multiply
    274,538.05x = 411,807.08 × 264,040.45
  4. Step 4: Simplify right side
    274,538.05x = 108,733,725,396.18
  5. Step 5: Solve for x
    x = 108,733,725,396.18/274,538.05
  6. Step 6: Final answer
    x = 396,060.68

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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.