Home / 281,872.32-421,979.04-188,145.60

Finding the Fourth Proportional to 281,872.32, 421,979.04 and 188,145.60

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Solution

The fourth proportional to 281,872.32, 421,979.04 and 188,145.60 is: 281,664.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,872.32 : 421,979.04 = 188,145.60 : x
  2. Step 2: Convert to fraction form
    281,872.32/421,979.04 = 188,145.60/x
  3. Step 3: Cross multiply
    281,872.32x = 421,979.04 × 188,145.60
  4. Step 4: Simplify right side
    281,872.32x = 79,393,499,668.22
  5. Step 5: Solve for x
    x = 79,393,499,668.22/281,872.32
  6. Step 6: Final answer
    x = 281,664.76

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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.