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Finding the Fourth Proportional to 323,603.24, 485,359.50 and 136,571

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Solution

The fourth proportional to 323,603.24, 485,359.50 and 136,571 is: 204,837.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,603.24 : 485,359.50 = 136,571 : x
  2. Step 2: Convert to fraction form
    323,603.24/485,359.50 = 136,571/x
  3. Step 3: Cross multiply
    323,603.24x = 485,359.50 × 136,571
  4. Step 4: Simplify right side
    323,603.24x = 66,286,032,274.50
  5. Step 5: Solve for x
    x = 66,286,032,274.50/323,603.24
  6. Step 6: Final answer
    x = 204,837.36

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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.