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Finding the Fourth Proportional to 339,137.88, 468,012.09 and 211,887.28

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Solution

The fourth proportional to 339,137.88, 468,012.09 and 211,887.28 is: 292,405.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,137.88 : 468,012.09 = 211,887.28 : x
  2. Step 2: Convert to fraction form
    339,137.88/468,012.09 = 211,887.28/x
  3. Step 3: Cross multiply
    339,137.88x = 468,012.09 × 211,887.28
  4. Step 4: Simplify right side
    339,137.88x = 99,165,808,757.22
  5. Step 5: Solve for x
    x = 99,165,808,757.22/339,137.88
  6. Step 6: Final answer
    x = 292,405.58

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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.