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Finding the Fourth Proportional to 143,458.77, 215,195.81 and 43,611.29

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Solution

The fourth proportional to 143,458.77, 215,195.81 and 43,611.29 is: 65,419.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,458.77 : 215,195.81 = 43,611.29 : x
  2. Step 2: Convert to fraction form
    143,458.77/215,195.81 = 43,611.29/x
  3. Step 3: Cross multiply
    143,458.77x = 215,195.81 × 43,611.29
  4. Step 4: Simplify right side
    143,458.77x = 9,384,965,582.66
  5. Step 5: Solve for x
    x = 9,384,965,582.66/143,458.77
  6. Step 6: Final answer
    x = 65,419.25

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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.