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Finding the Fourth Proportional to 431,100.96, 646,651.31 and 131,583.03

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Solution

The fourth proportional to 431,100.96, 646,651.31 and 131,583.03 is: 197,374.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,100.96 : 646,651.31 = 131,583.03 : x
  2. Step 2: Convert to fraction form
    431,100.96/646,651.31 = 131,583.03/x
  3. Step 3: Cross multiply
    431,100.96x = 646,651.31 × 131,583.03
  4. Step 4: Simplify right side
    431,100.96x = 85,088,338,065.35
  5. Step 5: Solve for x
    x = 85,088,338,065.35/431,100.96
  6. Step 6: Final answer
    x = 197,374.50

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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.