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Finding the Fourth Proportional to 431,615.55, 646,168.52 and 251,150.97

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Solution

The fourth proportional to 431,615.55, 646,168.52 and 251,150.97 is: 375,996.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,615.55 : 646,168.52 = 251,150.97 : x
  2. Step 2: Convert to fraction form
    431,615.55/646,168.52 = 251,150.97/x
  3. Step 3: Cross multiply
    431,615.55x = 646,168.52 × 251,150.97
  4. Step 4: Simplify right side
    431,615.55x = 162,285,851,815.13
  5. Step 5: Solve for x
    x = 162,285,851,815.13/431,615.55
  6. Step 6: Final answer
    x = 375,996.31

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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.