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Finding the Fourth Proportional to 372,860.56, 559,212.54 and 120,163.78

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Solution

The fourth proportional to 372,860.56, 559,212.54 and 120,163.78 is: 180,220.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,860.56 : 559,212.54 = 120,163.78 : x
  2. Step 2: Convert to fraction form
    372,860.56/559,212.54 = 120,163.78/x
  3. Step 3: Cross multiply
    372,860.56x = 559,212.54 × 120,163.78
  4. Step 4: Simplify right side
    372,860.56x = 67,197,092,629.80
  5. Step 5: Solve for x
    x = 67,197,092,629.80/372,860.56
  6. Step 6: Final answer
    x = 180,220.44

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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.