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Finding the Fourth Proportional to 338,321.73, 507,490.83 and 113,685.42

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Solution

The fourth proportional to 338,321.73, 507,490.83 and 113,685.42 is: 170,530.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,321.73 : 507,490.83 = 113,685.42 : x
  2. Step 2: Convert to fraction form
    338,321.73/507,490.83 = 113,685.42/x
  3. Step 3: Cross multiply
    338,321.73x = 507,490.83 × 113,685.42
  4. Step 4: Simplify right side
    338,321.73x = 57,694,308,154.70
  5. Step 5: Solve for x
    x = 57,694,308,154.70/338,321.73
  6. Step 6: Final answer
    x = 170,530.90

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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.