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Finding the Fourth Proportional to 543,628.62, 815,379.56 and 144,300.42

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Solution

The fourth proportional to 543,628.62, 815,379.56 and 144,300.42 is: 216,433.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,628.62 : 815,379.56 = 144,300.42 : x
  2. Step 2: Convert to fraction form
    543,628.62/815,379.56 = 144,300.42/x
  3. Step 3: Cross multiply
    543,628.62x = 815,379.56 × 144,300.42
  4. Step 4: Simplify right side
    543,628.62x = 117,659,612,967.42
  5. Step 5: Solve for x
    x = 117,659,612,967.42/543,628.62
  6. Step 6: Final answer
    x = 216,433.81

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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.