Home / 203,515.43-305,319.65-70,395.57

Finding the Fourth Proportional to 203,515.43, 305,319.65 and 70,395.57

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Solution

The fourth proportional to 203,515.43, 305,319.65 and 70,395.57 is: 105,609.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,515.43 : 305,319.65 = 70,395.57 : x
  2. Step 2: Convert to fraction form
    203,515.43/305,319.65 = 70,395.57/x
  3. Step 3: Cross multiply
    203,515.43x = 305,319.65 × 70,395.57
  4. Step 4: Simplify right side
    203,515.43x = 21,493,150,793.95
  5. Step 5: Solve for x
    x = 21,493,150,793.95/203,515.43
  6. Step 6: Final answer
    x = 105,609.44

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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.