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Finding the Fourth Proportional to 408,153.79, 612,244.46 and 155,396.40

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Solution

The fourth proportional to 408,153.79, 612,244.46 and 155,396.40 is: 233,099.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,153.79 : 612,244.46 = 155,396.40 : x
  2. Step 2: Convert to fraction form
    408,153.79/612,244.46 = 155,396.40/x
  3. Step 3: Cross multiply
    408,153.79x = 612,244.46 × 155,396.40
  4. Step 4: Simplify right side
    408,153.79x = 95,140,585,003.94
  5. Step 5: Solve for x
    x = 95,140,585,003.94/408,153.79
  6. Step 6: Final answer
    x = 233,099.84

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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.