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Finding the Fourth Proportional to 143,515.94, 215,284.91 and 43,684.65

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Solution

The fourth proportional to 143,515.94, 215,284.91 and 43,684.65 is: 65,530.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,515.94 : 215,284.91 = 43,684.65 : x
  2. Step 2: Convert to fraction form
    143,515.94/215,284.91 = 43,684.65/x
  3. Step 3: Cross multiply
    143,515.94x = 215,284.91 × 43,684.65
  4. Step 4: Simplify right side
    143,515.94x = 9,404,645,725.21
  5. Step 5: Solve for x
    x = 9,404,645,725.21/143,515.94
  6. Step 6: Final answer
    x = 65,530.32

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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.