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Finding the Fourth Proportional to 308,995.97, 426,426.58 and 173,028.71

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Solution

The fourth proportional to 308,995.97, 426,426.58 and 173,028.71 is: 238,786.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,995.97 : 426,426.58 = 173,028.71 : x
  2. Step 2: Convert to fraction form
    308,995.97/426,426.58 = 173,028.71/x
  3. Step 3: Cross multiply
    308,995.97x = 426,426.58 × 173,028.71
  4. Step 4: Simplify right side
    308,995.97x = 73,784,038,957.53
  5. Step 5: Solve for x
    x = 73,784,038,957.53/308,995.97
  6. Step 6: Final answer
    x = 238,786.42

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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.