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Finding the Fourth Proportional to 203,499.20, 305,162.40 and 98,350.40

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Solution

The fourth proportional to 203,499.20, 305,162.40 and 98,350.40 is: 147,483.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,499.20 : 305,162.40 = 98,350.40 : x
  2. Step 2: Convert to fraction form
    203,499.20/305,162.40 = 98,350.40/x
  3. Step 3: Cross multiply
    203,499.20x = 305,162.40 × 98,350.40
  4. Step 4: Simplify right side
    203,499.20x = 30,012,844,104.96
  5. Step 5: Solve for x
    x = 30,012,844,104.96/203,499.20
  6. Step 6: Final answer
    x = 147,483.84

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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.