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Finding the Fourth Proportional to 321,236.30, 481,454.61 and 207,083.10

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Solution

The fourth proportional to 321,236.30, 481,454.61 and 207,083.10 is: 310,366.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,236.30 : 481,454.61 = 207,083.10 : x
  2. Step 2: Convert to fraction form
    321,236.30/481,454.61 = 207,083.10/x
  3. Step 3: Cross multiply
    321,236.30x = 481,454.61 × 207,083.10
  4. Step 4: Simplify right side
    321,236.30x = 99,701,113,148.09
  5. Step 5: Solve for x
    x = 99,701,113,148.09/321,236.30
  6. Step 6: Final answer
    x = 310,366.90

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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.