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Finding the Fourth Proportional to 247,231.27, 370,724.23 and 78,729.64

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Solution

The fourth proportional to 247,231.27, 370,724.23 and 78,729.64 is: 118,055.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,231.27 : 370,724.23 = 78,729.64 : x
  2. Step 2: Convert to fraction form
    247,231.27/370,724.23 = 78,729.64/x
  3. Step 3: Cross multiply
    247,231.27x = 370,724.23 × 78,729.64
  4. Step 4: Simplify right side
    247,231.27x = 29,186,984,338.78
  5. Step 5: Solve for x
    x = 29,186,984,338.78/247,231.27
  6. Step 6: Final answer
    x = 118,055.39

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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.