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Finding the Fourth Proportional to 268,754.58, 403,117.29 and 81,751.50

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Solution

The fourth proportional to 268,754.58, 403,117.29 and 81,751.50 is: 122,622.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,754.58 : 403,117.29 = 81,751.50 : x
  2. Step 2: Convert to fraction form
    268,754.58/403,117.29 = 81,751.50/x
  3. Step 3: Cross multiply
    268,754.58x = 403,117.29 × 81,751.50
  4. Step 4: Simplify right side
    268,754.58x = 32,955,443,133.44
  5. Step 5: Solve for x
    x = 32,955,443,133.44/268,754.58
  6. Step 6: Final answer
    x = 122,622.81

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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.