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Finding the Fourth Proportional to 299,785.20, 449,605.80 and 173,151.60

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Solution

The fourth proportional to 299,785.20, 449,605.80 and 173,151.60 is: 259,685.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,785.20 : 449,605.80 = 173,151.60 : x
  2. Step 2: Convert to fraction form
    299,785.20/449,605.80 = 173,151.60/x
  3. Step 3: Cross multiply
    299,785.20x = 449,605.80 × 173,151.60
  4. Step 4: Simplify right side
    299,785.20x = 77,849,963,639.28
  5. Step 5: Solve for x
    x = 77,849,963,639.28/299,785.20
  6. Step 6: Final answer
    x = 259,685.81

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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.