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Finding the Fourth Proportional to 231,806.60, 347,940.30 and 113,611.40

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Solution

The fourth proportional to 231,806.60, 347,940.30 and 113,611.40 is: 170,530.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,806.60 : 347,940.30 = 113,611.40 : x
  2. Step 2: Convert to fraction form
    231,806.60/347,940.30 = 113,611.40/x
  3. Step 3: Cross multiply
    231,806.60x = 347,940.30 × 113,611.40
  4. Step 4: Simplify right side
    231,806.60x = 39,529,984,599.42
  5. Step 5: Solve for x
    x = 39,529,984,599.42/231,806.60
  6. Step 6: Final answer
    x = 170,530.02

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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.