Home / 535,107.21-738,419.73-305,619.39

Finding the Fourth Proportional to 535,107.21, 738,419.73 and 305,619.39

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Solution

The fourth proportional to 535,107.21, 738,419.73 and 305,619.39 is: 421,738.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,107.21 : 738,419.73 = 305,619.39 : x
  2. Step 2: Convert to fraction form
    535,107.21/738,419.73 = 305,619.39/x
  3. Step 3: Cross multiply
    535,107.21x = 738,419.73 × 305,619.39
  4. Step 4: Simplify right side
    535,107.21x = 225,675,387,446.57
  5. Step 5: Solve for x
    x = 225,675,387,446.57/535,107.21
  6. Step 6: Final answer
    x = 421,738.64

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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.