Home / 431,501.26-647,277.84-131,984.43

Finding the Fourth Proportional to 431,501.26, 647,277.84 and 131,984.43

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Solution

The fourth proportional to 431,501.26, 647,277.84 and 131,984.43 is: 197,984.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,501.26 : 647,277.84 = 131,984.43 : x
  2. Step 2: Convert to fraction form
    431,501.26/647,277.84 = 131,984.43/x
  3. Step 3: Cross multiply
    431,501.26x = 647,277.84 × 131,984.43
  4. Step 4: Simplify right side
    431,501.26x = 85,430,596,104.11
  5. Step 5: Solve for x
    x = 85,430,596,104.11/431,501.26
  6. Step 6: Final answer
    x = 197,984.58

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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.