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Finding the Fourth Proportional to 339,136.88, 468,010.71 and 211,886.28

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Solution

The fourth proportional to 339,136.88, 468,010.71 and 211,886.28 is: 292,404.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,136.88 : 468,010.71 = 211,886.28 : x
  2. Step 2: Convert to fraction form
    339,136.88/468,010.71 = 211,886.28/x
  3. Step 3: Cross multiply
    339,136.88x = 468,010.71 × 211,886.28
  4. Step 4: Simplify right side
    339,136.88x = 99,165,048,342.06
  5. Step 5: Solve for x
    x = 99,165,048,342.06/339,136.88
  6. Step 6: Final answer
    x = 292,404.21

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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.