Home / 268,904.16-403,304.40-81,891.36

Finding the Fourth Proportional to 268,904.16, 403,304.40 and 81,891.36

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Solution

The fourth proportional to 268,904.16, 403,304.40 and 81,891.36 is: 122,821.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,904.16 : 403,304.40 = 81,891.36 : x
  2. Step 2: Convert to fraction form
    268,904.16/403,304.40 = 81,891.36/x
  3. Step 3: Cross multiply
    268,904.16x = 403,304.40 × 81,891.36
  4. Step 4: Simplify right side
    268,904.16x = 33,027,145,809.98
  5. Step 5: Solve for x
    x = 33,027,145,809.98/268,904.16
  6. Step 6: Final answer
    x = 122,821.25

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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.