Home / 319,132.80-478,067.40-206,891.10

Finding the Fourth Proportional to 319,132.80, 478,067.40 and 206,891.10

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Solution

The fourth proportional to 319,132.80, 478,067.40 and 206,891.10 is: 309,927.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,132.80 : 478,067.40 = 206,891.10 : x
  2. Step 2: Convert to fraction form
    319,132.80/478,067.40 = 206,891.10/x
  3. Step 3: Cross multiply
    319,132.80x = 478,067.40 × 206,891.10
  4. Step 4: Simplify right side
    319,132.80x = 98,907,890,260.14
  5. Step 5: Solve for x
    x = 98,907,890,260.14/319,132.80
  6. Step 6: Final answer
    x = 309,927.06

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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.