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Finding the Fourth Proportional to 281,067.76, 421,767.64 and 103,698.64

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Solution

The fourth proportional to 281,067.76, 421,767.64 and 103,698.64 is: 155,609.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,067.76 : 421,767.64 = 103,698.64 : x
  2. Step 2: Convert to fraction form
    281,067.76/421,767.64 = 103,698.64/x
  3. Step 3: Cross multiply
    281,067.76x = 421,767.64 × 103,698.64
  4. Step 4: Simplify right side
    281,067.76x = 43,736,730,664.01
  5. Step 5: Solve for x
    x = 43,736,730,664.01/281,067.76
  6. Step 6: Final answer
    x = 155,609.20

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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.