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Finding the Fourth Proportional to 478,469.26, 660,383.20 and 274,657.96

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Solution

The fourth proportional to 478,469.26, 660,383.20 and 274,657.96 is: 379,082.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,469.26 : 660,383.20 = 274,657.96 : x
  2. Step 2: Convert to fraction form
    478,469.26/660,383.20 = 274,657.96/x
  3. Step 3: Cross multiply
    478,469.26x = 660,383.20 × 274,657.96
  4. Step 4: Simplify right side
    478,469.26x = 181,379,502,530.27
  5. Step 5: Solve for x
    x = 181,379,502,530.27/478,469.26
  6. Step 6: Final answer
    x = 379,082.87

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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.