Home / 431,749.80-647,810.82-231,836.40

Finding the Fourth Proportional to 431,749.80, 647,810.82 and 231,836.40

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Solution

The fourth proportional to 431,749.80, 647,810.82 and 231,836.40 is: 347,854.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,749.80 : 647,810.82 = 231,836.40 : x
  2. Step 2: Convert to fraction form
    431,749.80/647,810.82 = 231,836.40/x
  3. Step 3: Cross multiply
    431,749.80x = 647,810.82 × 231,836.40
  4. Step 4: Simplify right side
    431,749.80x = 150,186,128,389.85
  5. Step 5: Solve for x
    x = 150,186,128,389.85/431,749.80
  6. Step 6: Final answer
    x = 347,854.54

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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.