Home / 394,426.80-591,640.20-145,076.40

Finding the Fourth Proportional to 394,426.80, 591,640.20 and 145,076.40

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Solution

The fourth proportional to 394,426.80, 591,640.20 and 145,076.40 is: 217,614.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,426.80 : 591,640.20 = 145,076.40 : x
  2. Step 2: Convert to fraction form
    394,426.80/591,640.20 = 145,076.40/x
  3. Step 3: Cross multiply
    394,426.80x = 591,640.20 × 145,076.40
  4. Step 4: Simplify right side
    394,426.80x = 85,833,030,311.28
  5. Step 5: Solve for x
    x = 85,833,030,311.28/394,426.80
  6. Step 6: Final answer
    x = 217,614.60

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1.5x scale

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.