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Finding the Fourth Proportional to 399,837.60, 599,787.36 and 133,599.04

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Solution

The fourth proportional to 399,837.60, 599,787.36 and 133,599.04 is: 200,408.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,837.60 : 599,787.36 = 133,599.04 : x
  2. Step 2: Convert to fraction form
    399,837.60/599,787.36 = 133,599.04/x
  3. Step 3: Cross multiply
    399,837.60x = 599,787.36 × 133,599.04
  4. Step 4: Simplify right side
    399,837.60x = 80,131,014,000.67
  5. Step 5: Solve for x
    x = 80,131,014,000.67/399,837.60
  6. Step 6: Final answer
    x = 200,408.90

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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.