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Finding the Fourth Proportional to 485,361.94, 728,044.62 and 148,401.28

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Solution

The fourth proportional to 485,361.94, 728,044.62 and 148,401.28 is: 222,602.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,361.94 : 728,044.62 = 148,401.28 : x
  2. Step 2: Convert to fraction form
    485,361.94/728,044.62 = 148,401.28/x
  3. Step 3: Cross multiply
    485,361.94x = 728,044.62 × 148,401.28
  4. Step 4: Simplify right side
    485,361.94x = 108,042,753,505.11
  5. Step 5: Solve for x
    x = 108,042,753,505.11/485,361.94
  6. Step 6: Final answer
    x = 222,602.44

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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.