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Finding the Fourth Proportional to 427,556.80, 590,377.12 and 274,670.88

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Solution

The fourth proportional to 427,556.80, 590,377.12 and 274,670.88 is: 379,269.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,556.80 : 590,377.12 = 274,670.88 : x
  2. Step 2: Convert to fraction form
    427,556.80/590,377.12 = 274,670.88/x
  3. Step 3: Cross multiply
    427,556.80x = 590,377.12 × 274,670.88
  4. Step 4: Simplify right side
    427,556.80x = 162,159,403,082.27
  5. Step 5: Solve for x
    x = 162,159,403,082.27/427,556.80
  6. Step 6: Final answer
    x = 379,269.85

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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.