Home / 268,439.06-402,656.15-81,450.56

Finding the Fourth Proportional to 268,439.06, 402,656.15 and 81,450.56

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Solution

The fourth proportional to 268,439.06, 402,656.15 and 81,450.56 is: 122,175.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,439.06 : 402,656.15 = 81,450.56 : x
  2. Step 2: Convert to fraction form
    268,439.06/402,656.15 = 81,450.56/x
  3. Step 3: Cross multiply
    268,439.06x = 402,656.15 × 81,450.56
  4. Step 4: Simplify right side
    268,439.06x = 32,796,566,484.41
  5. Step 5: Solve for x
    x = 32,796,566,484.41/268,439.06
  6. Step 6: Final answer
    x = 122,175.09

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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.