Home / 320,515.48-442,272.54-177,256

Finding the Fourth Proportional to 320,515.48, 442,272.54 and 177,256

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Solution

The fourth proportional to 320,515.48, 442,272.54 and 177,256 is: 244,591.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,515.48 : 442,272.54 = 177,256 : x
  2. Step 2: Convert to fraction form
    320,515.48/442,272.54 = 177,256/x
  3. Step 3: Cross multiply
    320,515.48x = 442,272.54 × 177,256
  4. Step 4: Simplify right side
    320,515.48x = 78,395,461,350.24
  5. Step 5: Solve for x
    x = 78,395,461,350.24/320,515.48
  6. Step 6: Final answer
    x = 244,591.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.