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Finding the Fourth Proportional to 203,570.40, 305,355.60 and 140,584.80

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Solution

The fourth proportional to 203,570.40, 305,355.60 and 140,584.80 is: 210,877.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,570.40 : 305,355.60 = 140,584.80 : x
  2. Step 2: Convert to fraction form
    203,570.40/305,355.60 = 140,584.80/x
  3. Step 3: Cross multiply
    203,570.40x = 305,355.60 × 140,584.80
  4. Step 4: Simplify right side
    203,570.40x = 42,928,355,954.88
  5. Step 5: Solve for x
    x = 42,928,355,954.88/203,570.40
  6. Step 6: Final answer
    x = 210,877.20

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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.