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Finding the Fourth Proportional to 309,179.97, 426,571.52 and 173,195.55

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Solution

The fourth proportional to 309,179.97, 426,571.52 and 173,195.55 is: 238,955.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,179.97 : 426,571.52 = 173,195.55 : x
  2. Step 2: Convert to fraction form
    309,179.97/426,571.52 = 173,195.55/x
  3. Step 3: Cross multiply
    309,179.97x = 426,571.52 × 173,195.55
  4. Step 4: Simplify right side
    309,179.97x = 73,880,288,154.76
  5. Step 5: Solve for x
    x = 73,880,288,154.76/309,179.97
  6. Step 6: Final answer
    x = 238,955.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.