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Finding the Fourth Proportional to 212,660.42, 318,990.63 and 62,889.04

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Solution

The fourth proportional to 212,660.42, 318,990.63 and 62,889.04 is: 94,333.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,660.42 : 318,990.63 = 62,889.04 : x
  2. Step 2: Convert to fraction form
    212,660.42/318,990.63 = 62,889.04/x
  3. Step 3: Cross multiply
    212,660.42x = 318,990.63 × 62,889.04
  4. Step 4: Simplify right side
    212,660.42x = 20,061,015,486.41
  5. Step 5: Solve for x
    x = 20,061,015,486.41/212,660.42
  6. Step 6: Final answer
    x = 94,333.56

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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.