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Finding the Fourth Proportional to 613,121.08, 919,791.52 and 253,291.90

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Solution

The fourth proportional to 613,121.08, 919,791.52 and 253,291.90 is: 379,983.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,121.08 : 919,791.52 = 253,291.90 : x
  2. Step 2: Convert to fraction form
    613,121.08/919,791.52 = 253,291.90/x
  3. Step 3: Cross multiply
    613,121.08x = 919,791.52 × 253,291.90
  4. Step 4: Simplify right side
    613,121.08x = 232,975,741,704.69
  5. Step 5: Solve for x
    x = 232,975,741,704.69/613,121.08
  6. Step 6: Final answer
    x = 379,983.25

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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.