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Finding the Fourth Proportional to 279,160.56, 418,743.36 and 79,480.80

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Solution

The fourth proportional to 279,160.56, 418,743.36 and 79,480.80 is: 119,221.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,160.56 : 418,743.36 = 79,480.80 : x
  2. Step 2: Convert to fraction form
    279,160.56/418,743.36 = 79,480.80/x
  3. Step 3: Cross multiply
    279,160.56x = 418,743.36 × 79,480.80
  4. Step 4: Simplify right side
    279,160.56x = 33,282,057,247.49
  5. Step 5: Solve for x
    x = 33,282,057,247.49/279,160.56
  6. Step 6: Final answer
    x = 119,221.92

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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.