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Finding the Fourth Proportional to 323,969.80, 485,984.94 and 121,511.92

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Solution

The fourth proportional to 323,969.80, 485,984.94 and 121,511.92 is: 182,279.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,969.80 : 485,984.94 = 121,511.92 : x
  2. Step 2: Convert to fraction form
    323,969.80/485,984.94 = 121,511.92/x
  3. Step 3: Cross multiply
    323,969.80x = 485,984.94 × 121,511.92
  4. Step 4: Simplify right side
    323,969.80x = 59,052,963,150.48
  5. Step 5: Solve for x
    x = 59,052,963,150.48/323,969.80
  6. Step 6: Final answer
    x = 182,279.22

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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.