Home / 427,218.45-640,968.09-174,711.38

Finding the Fourth Proportional to 427,218.45, 640,968.09 and 174,711.38

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Solution

The fourth proportional to 427,218.45, 640,968.09 and 174,711.38 is: 262,124.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,218.45 : 640,968.09 = 174,711.38 : x
  2. Step 2: Convert to fraction form
    427,218.45/640,968.09 = 174,711.38/x
  3. Step 3: Cross multiply
    427,218.45x = 640,968.09 × 174,711.38
  4. Step 4: Simplify right side
    427,218.45x = 111,984,419,285.30
  5. Step 5: Solve for x
    x = 111,984,419,285.30/427,218.45
  6. Step 6: Final answer
    x = 262,124.49

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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.