Home / 428,255.82-642,388.23-175,471.38

Finding the Fourth Proportional to 428,255.82, 642,388.23 and 175,471.38

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Solution

The fourth proportional to 428,255.82, 642,388.23 and 175,471.38 is: 263,208.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,255.82 : 642,388.23 = 175,471.38 : x
  2. Step 2: Convert to fraction form
    428,255.82/642,388.23 = 175,471.38/x
  3. Step 3: Cross multiply
    428,255.82x = 642,388.23 × 175,471.38
  4. Step 4: Simplify right side
    428,255.82x = 112,720,749,213.86
  5. Step 5: Solve for x
    x = 112,720,749,213.86/428,255.82
  6. Step 6: Final answer
    x = 263,208.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.