Home / 394,535.40-591,803.10-145,314.60

Finding the Fourth Proportional to 394,535.40, 591,803.10 and 145,314.60

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Solution

The fourth proportional to 394,535.40, 591,803.10 and 145,314.60 is: 217,971.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,535.40 : 591,803.10 = 145,314.60 : x
  2. Step 2: Convert to fraction form
    394,535.40/591,803.10 = 145,314.60/x
  3. Step 3: Cross multiply
    394,535.40x = 591,803.10 × 145,314.60
  4. Step 4: Simplify right side
    394,535.40x = 85,997,630,755.26
  5. Step 5: Solve for x
    x = 85,997,630,755.26/394,535.40
  6. Step 6: Final answer
    x = 217,971.90

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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.