Home / 431,012.61-646,620.01-131,493.08

Finding the Fourth Proportional to 431,012.61, 646,620.01 and 131,493.08

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Solution

The fourth proportional to 431,012.61, 646,620.01 and 131,493.08 is: 197,270.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,012.61 : 646,620.01 = 131,493.08 : x
  2. Step 2: Convert to fraction form
    431,012.61/646,620.01 = 131,493.08/x
  3. Step 3: Cross multiply
    431,012.61x = 646,620.01 × 131,493.08
  4. Step 4: Simplify right side
    431,012.61x = 85,026,057,992.35
  5. Step 5: Solve for x
    x = 85,026,057,992.35/431,012.61
  6. Step 6: Final answer
    x = 197,270.46

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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.