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Finding the Fourth Proportional to 394,912.50, 545,066.91 and 272,576.58

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Solution

The fourth proportional to 394,912.50, 545,066.91 and 272,576.58 is: 376,216.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,912.50 : 545,066.91 = 272,576.58 : x
  2. Step 2: Convert to fraction form
    394,912.50/545,066.91 = 272,576.58/x
  3. Step 3: Cross multiply
    394,912.50x = 545,066.91 × 272,576.58
  4. Step 4: Simplify right side
    394,912.50x = 148,572,474,198.97
  5. Step 5: Solve for x
    x = 148,572,474,198.97/394,912.50
  6. Step 6: Final answer
    x = 376,216.19

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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.