Home / 481,310.79-664,000.32-290,218.02

Finding the Fourth Proportional to 481,310.79, 664,000.32 and 290,218.02

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Solution

The fourth proportional to 481,310.79, 664,000.32 and 290,218.02 is: 400,375.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,310.79 : 664,000.32 = 290,218.02 : x
  2. Step 2: Convert to fraction form
    481,310.79/664,000.32 = 290,218.02/x
  3. Step 3: Cross multiply
    481,310.79x = 664,000.32 × 290,218.02
  4. Step 4: Simplify right side
    481,310.79x = 192,704,858,149.77
  5. Step 5: Solve for x
    x = 192,704,858,149.77/481,310.79
  6. Step 6: Final answer
    x = 400,375.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.