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Finding the Fourth Proportional to 373,149.72, 515,268.54 and 319,961.88

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Solution

The fourth proportional to 373,149.72, 515,268.54 and 319,961.88 is: 441,823.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,149.72 : 515,268.54 = 319,961.88 : x
  2. Step 2: Convert to fraction form
    373,149.72/515,268.54 = 319,961.88/x
  3. Step 3: Cross multiply
    373,149.72x = 515,268.54 × 319,961.88
  4. Step 4: Simplify right side
    373,149.72x = 164,866,290,763.26
  5. Step 5: Solve for x
    x = 164,866,290,763.26/373,149.72
  6. Step 6: Final answer
    x = 441,823.43

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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.