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Finding the Fourth Proportional to 315,072.83, 434,783.22 and 179,087.87

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Solution

The fourth proportional to 315,072.83, 434,783.22 and 179,087.87 is: 247,131.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,072.83 : 434,783.22 = 179,087.87 : x
  2. Step 2: Convert to fraction form
    315,072.83/434,783.22 = 179,087.87/x
  3. Step 3: Cross multiply
    315,072.83x = 434,783.22 × 179,087.87
  4. Step 4: Simplify right side
    315,072.83x = 77,864,400,781.54
  5. Step 5: Solve for x
    x = 77,864,400,781.54/315,072.83
  6. Step 6: Final answer
    x = 247,131.44

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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.