Home / 354,311.20-531,499.20-143,905.60

Finding the Fourth Proportional to 354,311.20, 531,499.20 and 143,905.60

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Solution

The fourth proportional to 354,311.20, 531,499.20 and 143,905.60 is: 215,871.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,311.20 : 531,499.20 = 143,905.60 : x
  2. Step 2: Convert to fraction form
    354,311.20/531,499.20 = 143,905.60/x
  3. Step 3: Cross multiply
    354,311.20x = 531,499.20 × 143,905.60
  4. Step 4: Simplify right side
    354,311.20x = 76,485,711,275.52
  5. Step 5: Solve for x
    x = 76,485,711,275.52/354,311.20
  6. Step 6: Final answer
    x = 215,871.56

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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.