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Finding the Fourth Proportional to 373,470.31, 515,432.60 and 212,349.50

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Solution

The fourth proportional to 373,470.31, 515,432.60 and 212,349.50 is: 293,067.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,470.31 : 515,432.60 = 212,349.50 : x
  2. Step 2: Convert to fraction form
    373,470.31/515,432.60 = 212,349.50/x
  3. Step 3: Cross multiply
    373,470.31x = 515,432.60 × 212,349.50
  4. Step 4: Simplify right side
    373,470.31x = 109,451,854,893.70
  5. Step 5: Solve for x
    x = 109,451,854,893.70/373,470.31
  6. Step 6: Final answer
    x = 293,067.08

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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.