Home / 431,081.29-646,621.93-131,563.44

Finding the Fourth Proportional to 431,081.29, 646,621.93 and 131,563.44

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Solution

The fourth proportional to 431,081.29, 646,621.93 and 131,563.44 is: 197,345.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,081.29 : 646,621.93 = 131,563.44 : x
  2. Step 2: Convert to fraction form
    431,081.29/646,621.93 = 131,563.44/x
  3. Step 3: Cross multiply
    431,081.29x = 646,621.93 × 131,563.44
  4. Step 4: Simplify right side
    431,081.29x = 85,071,802,257.13
  5. Step 5: Solve for x
    x = 85,071,802,257.13/431,081.29
  6. Step 6: Final answer
    x = 197,345.15

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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.