Home / 313,945.40-471,177.30-145,724.60

Finding the Fourth Proportional to 313,945.40, 471,177.30 and 145,724.60

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Solution

The fourth proportional to 313,945.40, 471,177.30 and 145,724.60 is: 218,707.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,945.40 : 471,177.30 = 145,724.60 : x
  2. Step 2: Convert to fraction form
    313,945.40/471,177.30 = 145,724.60/x
  3. Step 3: Cross multiply
    313,945.40x = 471,177.30 × 145,724.60
  4. Step 4: Simplify right side
    313,945.40x = 68,662,123,571.58
  5. Step 5: Solve for x
    x = 68,662,123,571.58/313,945.40
  6. Step 6: Final answer
    x = 218,707.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.