Home / 427,272.80-640,972.96-157,380.38

Finding the Fourth Proportional to 427,272.80, 640,972.96 and 157,380.38

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Solution

The fourth proportional to 427,272.80, 640,972.96 and 157,380.38 is: 236,094.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,272.80 : 640,972.96 = 157,380.38 : x
  2. Step 2: Convert to fraction form
    427,272.80/640,972.96 = 157,380.38/x
  3. Step 3: Cross multiply
    427,272.80x = 640,972.96 × 157,380.38
  4. Step 4: Simplify right side
    427,272.80x = 100,876,568,014.53
  5. Step 5: Solve for x
    x = 100,876,568,014.53/427,272.80
  6. Step 6: Final answer
    x = 236,094.06

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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.