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Finding the Fourth Proportional to 308,961.69, 463,516.52 and 128,947.02

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Solution

The fourth proportional to 308,961.69, 463,516.52 and 128,947.02 is: 193,451.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,961.69 : 463,516.52 = 128,947.02 : x
  2. Step 2: Convert to fraction form
    308,961.69/463,516.52 = 128,947.02/x
  3. Step 3: Cross multiply
    308,961.69x = 463,516.52 × 128,947.02
  4. Step 4: Simplify right side
    308,961.69x = 59,769,073,330.04
  5. Step 5: Solve for x
    x = 59,769,073,330.04/308,961.69
  6. Step 6: Final answer
    x = 193,451.41

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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.