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Finding the Fourth Proportional to 475,989.45, 656,906.94 and 261,171.51

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Solution

The fourth proportional to 475,989.45, 656,906.94 and 261,171.51 is: 360,439.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,989.45 : 656,906.94 = 261,171.51 : x
  2. Step 2: Convert to fraction form
    475,989.45/656,906.94 = 261,171.51/x
  3. Step 3: Cross multiply
    475,989.45x = 656,906.94 × 261,171.51
  4. Step 4: Simplify right side
    475,989.45x = 171,565,377,449.28
  5. Step 5: Solve for x
    x = 171,565,377,449.28/475,989.45
  6. Step 6: Final answer
    x = 360,439.45

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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.