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Finding the Fourth Proportional to 323,648.91, 485,395.41 and 99,011.30

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Solution

The fourth proportional to 323,648.91, 485,395.41 and 99,011.30 is: 148,493.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,648.91 : 485,395.41 = 99,011.30 : x
  2. Step 2: Convert to fraction form
    323,648.91/485,395.41 = 99,011.30/x
  3. Step 3: Cross multiply
    323,648.91x = 485,395.41 × 99,011.30
  4. Step 4: Simplify right side
    323,648.91x = 48,059,628,131.16
  5. Step 5: Solve for x
    x = 48,059,628,131.16/323,648.91
  6. Step 6: Final answer
    x = 148,493.09

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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.