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Finding the Fourth Proportional to 203,572.80, 305,359.20 and 170,913.60

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Solution

The fourth proportional to 203,572.80, 305,359.20 and 170,913.60 is: 256,370.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,572.80 : 305,359.20 = 170,913.60 : x
  2. Step 2: Convert to fraction form
    203,572.80/305,359.20 = 170,913.60/x
  3. Step 3: Cross multiply
    203,572.80x = 305,359.20 × 170,913.60
  4. Step 4: Simplify right side
    203,572.80x = 52,190,040,165.12
  5. Step 5: Solve for x
    x = 52,190,040,165.12/203,572.80
  6. Step 6: Final answer
    x = 256,370.40

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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.