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Finding the Fourth Proportional to 543,228.36, 815,642.43 and 303,811.34

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Solution

The fourth proportional to 543,228.36, 815,642.43 and 303,811.34 is: 456,164.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,228.36 : 815,642.43 = 303,811.34 : x
  2. Step 2: Convert to fraction form
    543,228.36/815,642.43 = 303,811.34/x
  3. Step 3: Cross multiply
    543,228.36x = 815,642.43 × 303,811.34
  4. Step 4: Simplify right side
    543,228.36x = 247,801,419,619.16
  5. Step 5: Solve for x
    x = 247,801,419,619.16/543,228.36
  6. Step 6: Final answer
    x = 456,164.36

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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.