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Finding the Fourth Proportional to 247,756.49, 371,629.69 and 79,276.79

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Solution

The fourth proportional to 247,756.49, 371,629.69 and 79,276.79 is: 118,913.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,756.49 : 371,629.69 = 79,276.79 : x
  2. Step 2: Convert to fraction form
    247,756.49/371,629.69 = 79,276.79/x
  3. Step 3: Cross multiply
    247,756.49x = 371,629.69 × 79,276.79
  4. Step 4: Simplify right side
    247,756.49x = 29,461,609,622.78
  5. Step 5: Solve for x
    x = 29,461,609,622.78/247,756.49
  6. Step 6: Final answer
    x = 118,913.57

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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.