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Finding the Fourth Proportional to 372,805.30, 559,301.10 and 120,109.60

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Solution

The fourth proportional to 372,805.30, 559,301.10 and 120,109.60 is: 180,194.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,805.30 : 559,301.10 = 120,109.60 : x
  2. Step 2: Convert to fraction form
    372,805.30/559,301.10 = 120,109.60/x
  3. Step 3: Cross multiply
    372,805.30x = 559,301.10 × 120,109.60
  4. Step 4: Simplify right side
    372,805.30x = 67,177,431,400.56
  5. Step 5: Solve for x
    x = 67,177,431,400.56/372,805.30
  6. Step 6: Final answer
    x = 180,194.41

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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.