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Finding the Fourth Proportional to 143,568.47, 215,336.22 and 38,395.64

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Solution

The fourth proportional to 143,568.47, 215,336.22 and 38,395.64 is: 57,589.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,568.47 : 215,336.22 = 38,395.64 : x
  2. Step 2: Convert to fraction form
    143,568.47/215,336.22 = 38,395.64/x
  3. Step 3: Cross multiply
    143,568.47x = 215,336.22 × 38,395.64
  4. Step 4: Simplify right side
    143,568.47x = 8,267,971,982.08
  5. Step 5: Solve for x
    x = 8,267,971,982.08/143,568.47
  6. Step 6: Final answer
    x = 57,589.05

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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.