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Finding the Fourth Proportional to 336,806.40, 504,043.20 and 308,812.80

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Solution

The fourth proportional to 336,806.40, 504,043.20 and 308,812.80 is: 462,149.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,806.40 : 504,043.20 = 308,812.80 : x
  2. Step 2: Convert to fraction form
    336,806.40/504,043.20 = 308,812.80/x
  3. Step 3: Cross multiply
    336,806.40x = 504,043.20 × 308,812.80
  4. Step 4: Simplify right side
    336,806.40x = 155,654,991,912.96
  5. Step 5: Solve for x
    x = 155,654,991,912.96/336,806.40
  6. Step 6: Final answer
    x = 462,149.75

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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.