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Finding the Fourth Proportional to 203,560.40, 305,340.60 and 140,574.80

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Solution

The fourth proportional to 203,560.40, 305,340.60 and 140,574.80 is: 210,862.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,560.40 : 305,340.60 = 140,574.80 : x
  2. Step 2: Convert to fraction form
    203,560.40/305,340.60 = 140,574.80/x
  3. Step 3: Cross multiply
    203,560.40x = 305,340.60 × 140,574.80
  4. Step 4: Simplify right side
    203,560.40x = 42,923,193,776.88
  5. Step 5: Solve for x
    x = 42,923,193,776.88/203,560.40
  6. Step 6: Final answer
    x = 210,862.20

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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.