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Finding the Fourth Proportional to 143,684.39, 215,560.10 and 43,844.40

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Solution

The fourth proportional to 143,684.39, 215,560.10 and 43,844.40 is: 65,776.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,684.39 : 215,560.10 = 43,844.40 : x
  2. Step 2: Convert to fraction form
    143,684.39/215,560.10 = 43,844.40/x
  3. Step 3: Cross multiply
    143,684.39x = 215,560.10 × 43,844.40
  4. Step 4: Simplify right side
    143,684.39x = 9,451,103,358.05
  5. Step 5: Solve for x
    x = 9,451,103,358.05/143,684.39
  6. Step 6: Final answer
    x = 65,776.83

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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.