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Finding the Fourth Proportional to 394,912, 545,066.22 and 272,576.08

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Solution

The fourth proportional to 394,912, 545,066.22 and 272,576.08 is: 376,215.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,912 : 545,066.22 = 272,576.08 : x
  2. Step 2: Convert to fraction form
    394,912/545,066.22 = 272,576.08/x
  3. Step 3: Cross multiply
    394,912x = 545,066.22 × 272,576.08
  4. Step 4: Simplify right side
    394,912x = 148,572,013,588.02
  5. Step 5: Solve for x
    x = 148,572,013,588.02/394,912
  6. Step 6: Final answer
    x = 376,215.50

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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.