Home / 307,945.68-421,878.56-296,432.31

Finding the Fourth Proportional to 307,945.68, 421,878.56 and 296,432.31

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Solution

The fourth proportional to 307,945.68, 421,878.56 and 296,432.31 is: 406,105.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,945.68 : 421,878.56 = 296,432.31 : x
  2. Step 2: Convert to fraction form
    307,945.68/421,878.56 = 296,432.31/x
  3. Step 3: Cross multiply
    307,945.68x = 421,878.56 × 296,432.31
  4. Step 4: Simplify right side
    307,945.68x = 125,058,433,807.09
  5. Step 5: Solve for x
    x = 125,058,433,807.09/307,945.68
  6. Step 6: Final answer
    x = 406,105.50

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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.