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Finding the Fourth Proportional to 427,558.80, 590,379.88 and 274,672.88

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Solution

The fourth proportional to 427,558.80, 590,379.88 and 274,672.88 is: 379,272.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,558.80 : 590,379.88 = 274,672.88 : x
  2. Step 2: Convert to fraction form
    427,558.80/590,379.88 = 274,672.88/x
  3. Step 3: Cross multiply
    427,558.80x = 590,379.88 × 274,672.88
  4. Step 4: Simplify right side
    427,558.80x = 162,161,341,933.65
  5. Step 5: Solve for x
    x = 162,161,341,933.65/427,558.80
  6. Step 6: Final answer
    x = 379,272.61

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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.