Home / 428,971.87-591,961.45-235,375.33

Finding the Fourth Proportional to 428,971.87, 591,961.45 and 235,375.33

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Solution

The fourth proportional to 428,971.87, 591,961.45 and 235,375.33 is: 324,807.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,971.87 : 591,961.45 = 235,375.33 : x
  2. Step 2: Convert to fraction form
    428,971.87/591,961.45 = 235,375.33/x
  3. Step 3: Cross multiply
    428,971.87x = 591,961.45 × 235,375.33
  4. Step 4: Simplify right side
    428,971.87x = 139,333,118,984.25
  5. Step 5: Solve for x
    x = 139,333,118,984.25/428,971.87
  6. Step 6: Final answer
    x = 324,807.12

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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.