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Finding the Fourth Proportional to 279,220.56, 418,825.38 and 79,542.24

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Solution

The fourth proportional to 279,220.56, 418,825.38 and 79,542.24 is: 119,311.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,220.56 : 418,825.38 = 79,542.24 : x
  2. Step 2: Convert to fraction form
    279,220.56/418,825.38 = 79,542.24/x
  3. Step 3: Cross multiply
    279,220.56x = 418,825.38 × 79,542.24
  4. Step 4: Simplify right side
    279,220.56x = 33,314,308,894.05
  5. Step 5: Solve for x
    x = 33,314,308,894.05/279,220.56
  6. Step 6: Final answer
    x = 119,311.80

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1.5x scale

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.