Home / 320,375.10-442,112.15-228,663.26

Finding the Fourth Proportional to 320,375.10, 442,112.15 and 228,663.26

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Solution

The fourth proportional to 320,375.10, 442,112.15 and 228,663.26 is: 315,551.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,375.10 : 442,112.15 = 228,663.26 : x
  2. Step 2: Convert to fraction form
    320,375.10/442,112.15 = 228,663.26/x
  3. Step 3: Cross multiply
    320,375.10x = 442,112.15 × 228,663.26
  4. Step 4: Simplify right side
    320,375.10x = 101,094,802,150.73
  5. Step 5: Solve for x
    x = 101,094,802,150.73/320,375.10
  6. Step 6: Final answer
    x = 315,551.37

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1.5x scale

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.