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Finding the Fourth Proportional to 319,620.60, 479,949.30 and 231,492.60

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Solution

The fourth proportional to 319,620.60, 479,949.30 and 231,492.60 is: 347,614.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,620.60 : 479,949.30 = 231,492.60 : x
  2. Step 2: Convert to fraction form
    319,620.60/479,949.30 = 231,492.60/x
  3. Step 3: Cross multiply
    319,620.60x = 479,949.30 × 231,492.60
  4. Step 4: Simplify right side
    319,620.60x = 111,104,711,325.18
  5. Step 5: Solve for x
    x = 111,104,711,325.18/319,620.60
  6. Step 6: Final answer
    x = 347,614.36

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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.