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Finding the Fourth Proportional to 543,760.48, 815,191.62 and 239,938.30

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Solution

The fourth proportional to 543,760.48, 815,191.62 and 239,938.30 is: 359,709.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,760.48 : 815,191.62 = 239,938.30 : x
  2. Step 2: Convert to fraction form
    543,760.48/815,191.62 = 239,938.30/x
  3. Step 3: Cross multiply
    543,760.48x = 815,191.62 × 239,938.30
  4. Step 4: Simplify right side
    543,760.48x = 195,595,691,477.05
  5. Step 5: Solve for x
    x = 195,595,691,477.05/543,760.48
  6. Step 6: Final answer
    x = 359,709.28

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1.5x scale

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.