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Finding the Fourth Proportional to 308,084.94, 462,057.56 and 139,493.97

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Solution

The fourth proportional to 308,084.94, 462,057.56 and 139,493.97 is: 209,209.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,084.94 : 462,057.56 = 139,493.97 : x
  2. Step 2: Convert to fraction form
    308,084.94/462,057.56 = 139,493.97/x
  3. Step 3: Cross multiply
    308,084.94x = 462,057.56 × 139,493.97
  4. Step 4: Simplify right side
    308,084.94x = 64,454,242,715.44
  5. Step 5: Solve for x
    x = 64,454,242,715.44/308,084.94
  6. Step 6: Final answer
    x = 209,209.33

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1.5x scale

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.