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Finding the Fourth Proportional to 213,192.90, 319,760.22 and 63,456.30

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Solution

The fourth proportional to 213,192.90, 319,760.22 and 63,456.30 is: 95,175.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,192.90 : 319,760.22 = 63,456.30 : x
  2. Step 2: Convert to fraction form
    213,192.90/319,760.22 = 63,456.30/x
  3. Step 3: Cross multiply
    213,192.90x = 319,760.22 × 63,456.30
  4. Step 4: Simplify right side
    213,192.90x = 20,290,800,448.39
  5. Step 5: Solve for x
    x = 20,290,800,448.39/213,192.90
  6. Step 6: Final answer
    x = 95,175.78

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1.5x scale

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.