Home / 427,157.28-641,899.88-227,620.26

Finding the Fourth Proportional to 427,157.28, 641,899.88 and 227,620.26

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Solution

The fourth proportional to 427,157.28, 641,899.88 and 227,620.26 is: 342,050.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,157.28 : 641,899.88 = 227,620.26 : x
  2. Step 2: Convert to fraction form
    427,157.28/641,899.88 = 227,620.26/x
  3. Step 3: Cross multiply
    427,157.28x = 641,899.88 × 227,620.26
  4. Step 4: Simplify right side
    427,157.28x = 146,109,417,579.57
  5. Step 5: Solve for x
    x = 146,109,417,579.57/427,157.28
  6. Step 6: Final answer
    x = 342,050.63

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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.