Home / 281,359.28-422,080.64-81,681.32

Finding the Fourth Proportional to 281,359.28, 422,080.64 and 81,681.32

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Solution

The fourth proportional to 281,359.28, 422,080.64 and 81,681.32 is: 122,534.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,359.28 : 422,080.64 = 81,681.32 : x
  2. Step 2: Convert to fraction form
    281,359.28/422,080.64 = 81,681.32/x
  3. Step 3: Cross multiply
    281,359.28x = 422,080.64 × 81,681.32
  4. Step 4: Simplify right side
    281,359.28x = 34,476,103,821.64
  5. Step 5: Solve for x
    x = 34,476,103,821.64/281,359.28
  6. Step 6: Final answer
    x = 122,534.09

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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.