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Finding the Fourth Proportional to 373,563.59, 515,515.31 and 212,418.65

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Solution

The fourth proportional to 373,563.59, 515,515.31 and 212,418.65 is: 293,136.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,563.59 : 515,515.31 = 212,418.65 : x
  2. Step 2: Convert to fraction form
    373,563.59/515,515.31 = 212,418.65/x
  3. Step 3: Cross multiply
    373,563.59x = 515,515.31 × 212,418.65
  4. Step 4: Simplify right side
    373,563.59x = 109,505,062,564.86
  5. Step 5: Solve for x
    x = 109,505,062,564.86/373,563.59
  6. Step 6: Final answer
    x = 293,136.34

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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.