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Finding the Fourth Proportional to 338,414.29, 507,622.56 and 85,694.65

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Solution

The fourth proportional to 338,414.29, 507,622.56 and 85,694.65 is: 128,542.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,414.29 : 507,622.56 = 85,694.65 : x
  2. Step 2: Convert to fraction form
    338,414.29/507,622.56 = 85,694.65/x
  3. Step 3: Cross multiply
    338,414.29x = 507,622.56 × 85,694.65
  4. Step 4: Simplify right side
    338,414.29x = 43,500,537,611.30
  5. Step 5: Solve for x
    x = 43,500,537,611.30/338,414.29
  6. Step 6: Final answer
    x = 128,542.26

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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.