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Finding the Fourth Proportional to 203,490.30, 305,235.45 and 150,346.20

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Solution

The fourth proportional to 203,490.30, 305,235.45 and 150,346.20 is: 225,519.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,490.30 : 305,235.45 = 150,346.20 : x
  2. Step 2: Convert to fraction form
    203,490.30/305,235.45 = 150,346.20/x
  3. Step 3: Cross multiply
    203,490.30x = 305,235.45 × 150,346.20
  4. Step 4: Simplify right side
    203,490.30x = 45,890,990,012.79
  5. Step 5: Solve for x
    x = 45,890,990,012.79/203,490.30
  6. Step 6: Final answer
    x = 225,519.30

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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.