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Finding the Fourth Proportional to 499,163.50, 688,845.60 and 272,809

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Solution

The fourth proportional to 499,163.50, 688,845.60 and 272,809 is: 376,476.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,163.50 : 688,845.60 = 272,809 : x
  2. Step 2: Convert to fraction form
    499,163.50/688,845.60 = 272,809/x
  3. Step 3: Cross multiply
    499,163.50x = 688,845.60 × 272,809
  4. Step 4: Simplify right side
    499,163.50x = 187,923,279,290.40
  5. Step 5: Solve for x
    x = 187,923,279,290.40/499,163.50
  6. Step 6: Final answer
    x = 376,476.40

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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.