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Finding the Fourth Proportional to 479,109.24, 661,169.48 and 275,173.34

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Solution

The fourth proportional to 479,109.24, 661,169.48 and 275,173.34 is: 379,738.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,109.24 : 661,169.48 = 275,173.34 : x
  2. Step 2: Convert to fraction form
    479,109.24/661,169.48 = 275,173.34/x
  3. Step 3: Cross multiply
    479,109.24x = 661,169.48 × 275,173.34
  4. Step 4: Simplify right side
    479,109.24x = 181,936,209,435.95
  5. Step 5: Solve for x
    x = 181,936,209,435.95/479,109.24
  6. Step 6: Final answer
    x = 379,738.47

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1.5x scale

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.