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Finding the Fourth Proportional to 143,544.40, 215,230.20 and 73,560.40

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Solution

The fourth proportional to 143,544.40, 215,230.20 and 73,560.40 is: 110,296.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,544.40 : 215,230.20 = 73,560.40 : x
  2. Step 2: Convert to fraction form
    143,544.40/215,230.20 = 73,560.40/x
  3. Step 3: Cross multiply
    143,544.40x = 215,230.20 × 73,560.40
  4. Step 4: Simplify right side
    143,544.40x = 15,832,419,604.08
  5. Step 5: Solve for x
    x = 15,832,419,604.08/143,544.40
  6. Step 6: Final answer
    x = 110,296.32

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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.