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Finding the Fourth Proportional to 339,480.20, 468,287.78 and 211,934.36

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Solution

The fourth proportional to 339,480.20, 468,287.78 and 211,934.36 is: 292,347.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,480.20 : 468,287.78 = 211,934.36 : x
  2. Step 2: Convert to fraction form
    339,480.20/468,287.78 = 211,934.36/x
  3. Step 3: Cross multiply
    339,480.20x = 468,287.78 × 211,934.36
  4. Step 4: Simplify right side
    339,480.20x = 99,246,270,950.12
  5. Step 5: Solve for x
    x = 99,246,270,950.12/339,480.20
  6. Step 6: Final answer
    x = 292,347.75

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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.