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Finding the Fourth Proportional to 468,177.54, 645,912.15 and 307,251.26

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Solution

The fourth proportional to 468,177.54, 645,912.15 and 307,251.26 is: 423,893.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,177.54 : 645,912.15 = 307,251.26 : x
  2. Step 2: Convert to fraction form
    468,177.54/645,912.15 = 307,251.26/x
  3. Step 3: Cross multiply
    468,177.54x = 645,912.15 × 307,251.26
  4. Step 4: Simplify right side
    468,177.54x = 198,457,321,936.81
  5. Step 5: Solve for x
    x = 198,457,321,936.81/468,177.54
  6. Step 6: Final answer
    x = 423,893.30

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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.