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Finding the Fourth Proportional to 339,515.28, 468,560.16 and 188,622

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Solution

The fourth proportional to 339,515.28, 468,560.16 and 188,622 is: 260,314.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,515.28 : 468,560.16 = 188,622 : x
  2. Step 2: Convert to fraction form
    339,515.28/468,560.16 = 188,622/x
  3. Step 3: Cross multiply
    339,515.28x = 468,560.16 × 188,622
  4. Step 4: Simplify right side
    339,515.28x = 88,380,754,499.52
  5. Step 5: Solve for x
    x = 88,380,754,499.52/339,515.28
  6. Step 6: Final answer
    x = 260,314.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.