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Finding the Fourth Proportional to 212,170.31, 318,245.86 and 62,415.48

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Solution

The fourth proportional to 212,170.31, 318,245.86 and 62,415.48 is: 93,620.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,170.31 : 318,245.86 = 62,415.48 : x
  2. Step 2: Convert to fraction form
    212,170.31/318,245.86 = 62,415.48/x
  3. Step 3: Cross multiply
    212,170.31x = 318,245.86 × 62,415.48
  4. Step 4: Simplify right side
    212,170.31x = 19,863,468,109.91
  5. Step 5: Solve for x
    x = 19,863,468,109.91/212,170.31
  6. Step 6: Final answer
    x = 93,620.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.