Home / 307,945.80-421,878.70-296,432.43

Finding the Fourth Proportional to 307,945.80, 421,878.70 and 296,432.43

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Solution

The fourth proportional to 307,945.80, 421,878.70 and 296,432.43 is: 406,105.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,945.80 : 421,878.70 = 296,432.43 : x
  2. Step 2: Convert to fraction form
    307,945.80/421,878.70 = 296,432.43/x
  3. Step 3: Cross multiply
    307,945.80x = 421,878.70 × 296,432.43
  4. Step 4: Simplify right side
    307,945.80x = 125,058,525,663.97
  5. Step 5: Solve for x
    x = 125,058,525,663.97/307,945.80
  6. Step 6: Final answer
    x = 406,105.63

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.