Home / 347,318.20-520,847.70-136,912.60

Finding the Fourth Proportional to 347,318.20, 520,847.70 and 136,912.60

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Solution

The fourth proportional to 347,318.20, 520,847.70 and 136,912.60 is: 205,317.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,318.20 : 520,847.70 = 136,912.60 : x
  2. Step 2: Convert to fraction form
    347,318.20/520,847.70 = 136,912.60/x
  3. Step 3: Cross multiply
    347,318.20x = 520,847.70 × 136,912.60
  4. Step 4: Simplify right side
    347,318.20x = 71,310,612,811.02
  5. Step 5: Solve for x
    x = 71,310,612,811.02/347,318.20
  6. Step 6: Final answer
    x = 205,317.81

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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.