Home / 427,389.48-640,517.94-227,278.98

Finding the Fourth Proportional to 427,389.48, 640,517.94 and 227,278.98

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Solution

The fourth proportional to 427,389.48, 640,517.94 and 227,278.98 is: 340,617.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,389.48 : 640,517.94 = 227,278.98 : x
  2. Step 2: Convert to fraction form
    427,389.48/640,517.94 = 227,278.98/x
  3. Step 3: Cross multiply
    427,389.48x = 640,517.94 × 227,278.98
  4. Step 4: Simplify right side
    427,389.48x = 145,576,264,074.90
  5. Step 5: Solve for x
    x = 145,576,264,074.90/427,389.48
  6. Step 6: Final answer
    x = 340,617.33

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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.