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Finding the Fourth Proportional to 281,036.76, 421,721.46 and 103,668.44

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Solution

The fourth proportional to 281,036.76, 421,721.46 and 103,668.44 is: 155,564.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,036.76 : 421,721.46 = 103,668.44 : x
  2. Step 2: Convert to fraction form
    281,036.76/421,721.46 = 103,668.44/x
  3. Step 3: Cross multiply
    281,036.76x = 421,721.46 × 103,668.44
  4. Step 4: Simplify right side
    281,036.76x = 43,719,205,872.72
  5. Step 5: Solve for x
    x = 43,719,205,872.72/281,036.76
  6. Step 6: Final answer
    x = 155,564.01

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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.