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Finding the Fourth Proportional to 408,912.80, 613,599.60 and 159,562.40

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Solution

The fourth proportional to 408,912.80, 613,599.60 and 159,562.40 is: 239,433.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,912.80 : 613,599.60 = 159,562.40 : x
  2. Step 2: Convert to fraction form
    408,912.80/613,599.60 = 159,562.40/x
  3. Step 3: Cross multiply
    408,912.80x = 613,599.60 × 159,562.40
  4. Step 4: Simplify right side
    408,912.80x = 97,907,424,815.04
  5. Step 5: Solve for x
    x = 97,907,424,815.04/408,912.80
  6. Step 6: Final answer
    x = 239,433.50

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1.5x scale

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.