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Finding the Fourth Proportional to 341,563.78, 512,522.98 and 139,308.26

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Solution

The fourth proportional to 341,563.78, 512,522.98 and 139,308.26 is: 209,034.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,563.78 : 512,522.98 = 139,308.26 : x
  2. Step 2: Convert to fraction form
    341,563.78/512,522.98 = 139,308.26/x
  3. Step 3: Cross multiply
    341,563.78x = 512,522.98 × 139,308.26
  4. Step 4: Simplify right side
    341,563.78x = 71,398,684,553.81
  5. Step 5: Solve for x
    x = 71,398,684,553.81/341,563.78
  6. Step 6: Final answer
    x = 209,034.71

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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.