Home / 427,022.96-640,600.85-142,625.48

Finding the Fourth Proportional to 427,022.96, 640,600.85 and 142,625.48

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Solution

The fourth proportional to 427,022.96, 640,600.85 and 142,625.48 is: 213,960.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,022.96 : 640,600.85 = 142,625.48 : x
  2. Step 2: Convert to fraction form
    427,022.96/640,600.85 = 142,625.48/x
  3. Step 3: Cross multiply
    427,022.96x = 640,600.85 × 142,625.48
  4. Step 4: Simplify right side
    427,022.96x = 91,366,000,873.22
  5. Step 5: Solve for x
    x = 91,366,000,873.22/427,022.96
  6. Step 6: Final answer
    x = 213,960.40

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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.