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Finding the Fourth Proportional to 229,388.80, 343,111.20 and 205,866.40

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Solution

The fourth proportional to 229,388.80, 343,111.20 and 205,866.40 is: 307,927.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,388.80 : 343,111.20 = 205,866.40 : x
  2. Step 2: Convert to fraction form
    229,388.80/343,111.20 = 205,866.40/x
  3. Step 3: Cross multiply
    229,388.80x = 343,111.20 × 205,866.40
  4. Step 4: Simplify right side
    229,388.80x = 70,635,067,543.68
  5. Step 5: Solve for x
    x = 70,635,067,543.68/229,388.80
  6. Step 6: Final answer
    x = 307,927.27

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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.