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Finding the Fourth Proportional to 334,081.20, 501,121.80 and 221,888.10

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Solution

The fourth proportional to 334,081.20, 501,121.80 and 221,888.10 is: 332,832.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,081.20 : 501,121.80 = 221,888.10 : x
  2. Step 2: Convert to fraction form
    334,081.20/501,121.80 = 221,888.10/x
  3. Step 3: Cross multiply
    334,081.20x = 501,121.80 × 221,888.10
  4. Step 4: Simplify right side
    334,081.20x = 111,192,964,070.58
  5. Step 5: Solve for x
    x = 111,192,964,070.58/334,081.20
  6. Step 6: Final answer
    x = 332,832.15

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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.