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Finding the Fourth Proportional to 543,347.20, 815,020.80 and 330,770.80

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Solution

The fourth proportional to 543,347.20, 815,020.80 and 330,770.80 is: 496,156.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,347.20 : 815,020.80 = 330,770.80 : x
  2. Step 2: Convert to fraction form
    543,347.20/815,020.80 = 330,770.80/x
  3. Step 3: Cross multiply
    543,347.20x = 815,020.80 × 330,770.80
  4. Step 4: Simplify right side
    543,347.20x = 269,585,082,032.64
  5. Step 5: Solve for x
    x = 269,585,082,032.64/543,347.20
  6. Step 6: Final answer
    x = 496,156.20

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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.