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Finding the Fourth Proportional to 212,665.28, 318,997.88 and 62,893.88

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Solution

The fourth proportional to 212,665.28, 318,997.88 and 62,893.88 is: 94,340.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,665.28 : 318,997.88 = 62,893.88 : x
  2. Step 2: Convert to fraction form
    212,665.28/318,997.88 = 62,893.88/x
  3. Step 3: Cross multiply
    212,665.28x = 318,997.88 × 62,893.88
  4. Step 4: Simplify right side
    212,665.28x = 20,063,014,384.97
  5. Step 5: Solve for x
    x = 20,063,014,384.97/212,665.28
  6. Step 6: Final answer
    x = 94,340.81

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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.