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Finding the Fourth Proportional to 247,803.20, 371,672.96 and 79,309.43

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Solution

The fourth proportional to 247,803.20, 371,672.96 and 79,309.43 is: 118,953.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,803.20 : 371,672.96 = 79,309.43 : x
  2. Step 2: Convert to fraction form
    247,803.20/371,672.96 = 79,309.43/x
  3. Step 3: Cross multiply
    247,803.20x = 371,672.96 × 79,309.43
  4. Step 4: Simplify right side
    247,803.20x = 29,477,168,745.65
  5. Step 5: Solve for x
    x = 29,477,168,745.65/247,803.20
  6. Step 6: Final answer
    x = 118,953.95

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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.