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Finding the Fourth Proportional to 321,677.73, 482,533.61 and 85,013.96

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Solution

The fourth proportional to 321,677.73, 482,533.61 and 85,013.96 is: 127,525.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,677.73 : 482,533.61 = 85,013.96 : x
  2. Step 2: Convert to fraction form
    321,677.73/482,533.61 = 85,013.96/x
  3. Step 3: Cross multiply
    321,677.73x = 482,533.61 × 85,013.96
  4. Step 4: Simplify right side
    321,677.73x = 41,022,090,181.46
  5. Step 5: Solve for x
    x = 41,022,090,181.46/321,677.73
  6. Step 6: Final answer
    x = 127,525.43

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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.