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Finding the Fourth Proportional to 247,276.45, 370,910.64 and 78,794.51

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Solution

The fourth proportional to 247,276.45, 370,910.64 and 78,794.51 is: 118,190.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,276.45 : 370,910.64 = 78,794.51 : x
  2. Step 2: Convert to fraction form
    247,276.45/370,910.64 = 78,794.51/x
  3. Step 3: Cross multiply
    247,276.45x = 370,910.64 × 78,794.51
  4. Step 4: Simplify right side
    247,276.45x = 29,225,722,132.59
  5. Step 5: Solve for x
    x = 29,225,722,132.59/247,276.45
  6. Step 6: Final answer
    x = 118,190.48

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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.