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Finding the Fourth Proportional to 613,634.05, 920,504.26 and 187,265.86

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Solution

The fourth proportional to 613,634.05, 920,504.26 and 187,265.86 is: 280,915.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,634.05 : 920,504.26 = 187,265.86 : x
  2. Step 2: Convert to fraction form
    613,634.05/920,504.26 = 187,265.86/x
  3. Step 3: Cross multiply
    613,634.05x = 920,504.26 × 187,265.86
  4. Step 4: Simplify right side
    613,634.05x = 172,379,024,993.22
  5. Step 5: Solve for x
    x = 172,379,024,993.22/613,634.05
  6. Step 6: Final answer
    x = 280,915.03

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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.