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Finding the Fourth Proportional to 427,555.78, 590,375.76 and 274,669.90

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Solution

The fourth proportional to 427,555.78, 590,375.76 and 274,669.90 is: 379,268.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,555.78 : 590,375.76 = 274,669.90 : x
  2. Step 2: Convert to fraction form
    427,555.78/590,375.76 = 274,669.90/x
  3. Step 3: Cross multiply
    427,555.78x = 590,375.76 × 274,669.90
  4. Step 4: Simplify right side
    427,555.78x = 162,158,450,961.62
  5. Step 5: Solve for x
    x = 162,158,450,961.62/427,555.78
  6. Step 6: Final answer
    x = 379,268.53

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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.