Home / 268,972.20-403,458.30-91,679.40

Finding the Fourth Proportional to 268,972.20, 403,458.30 and 91,679.40

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Solution

The fourth proportional to 268,972.20, 403,458.30 and 91,679.40 is: 137,519.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,972.20 : 403,458.30 = 91,679.40 : x
  2. Step 2: Convert to fraction form
    268,972.20/403,458.30 = 91,679.40/x
  3. Step 3: Cross multiply
    268,972.20x = 403,458.30 × 91,679.40
  4. Step 4: Simplify right side
    268,972.20x = 36,988,814,869.02
  5. Step 5: Solve for x
    x = 36,988,814,869.02/268,972.20
  6. Step 6: Final answer
    x = 137,519.10

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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.