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Finding the Fourth Proportional to 247,163.50, 370,740.09 and 78,695.45

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Solution

The fourth proportional to 247,163.50, 370,740.09 and 78,695.45 is: 118,041.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,163.50 : 370,740.09 = 78,695.45 : x
  2. Step 2: Convert to fraction form
    247,163.50/370,740.09 = 78,695.45/x
  3. Step 3: Cross multiply
    247,163.50x = 370,740.09 × 78,695.45
  4. Step 4: Simplify right side
    247,163.50x = 29,175,557,604.61
  5. Step 5: Solve for x
    x = 29,175,557,604.61/247,163.50
  6. Step 6: Final answer
    x = 118,041.53

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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.