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Finding the Fourth Proportional to 323,701.80, 485,552.70 and 211,727.40

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Solution

The fourth proportional to 323,701.80, 485,552.70 and 211,727.40 is: 317,591.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,701.80 : 485,552.70 = 211,727.40 : x
  2. Step 2: Convert to fraction form
    323,701.80/485,552.70 = 211,727.40/x
  3. Step 3: Cross multiply
    323,701.80x = 485,552.70 × 211,727.40
  4. Step 4: Simplify right side
    323,701.80x = 102,804,810,733.98
  5. Step 5: Solve for x
    x = 102,804,810,733.98/323,701.80
  6. Step 6: Final answer
    x = 317,591.10

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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.