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Finding the Fourth Proportional to 268,643.54, 402,879.69 and 88,695.42

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Solution

The fourth proportional to 268,643.54, 402,879.69 and 88,695.42 is: 133,014.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,643.54 : 402,879.69 = 88,695.42 : x
  2. Step 2: Convert to fraction form
    268,643.54/402,879.69 = 88,695.42/x
  3. Step 3: Cross multiply
    268,643.54x = 402,879.69 × 88,695.42
  4. Step 4: Simplify right side
    268,643.54x = 35,733,583,314.02
  5. Step 5: Solve for x
    x = 35,733,583,314.02/268,643.54
  6. Step 6: Final answer
    x = 133,014.86

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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.