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Finding the Fourth Proportional to 143,275.71, 214,914.14 and 43,436.77

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Solution

The fourth proportional to 143,275.71, 214,914.14 and 43,436.77 is: 65,155.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,275.71 : 214,914.14 = 43,436.77 : x
  2. Step 2: Convert to fraction form
    143,275.71/214,914.14 = 43,436.77/x
  3. Step 3: Cross multiply
    143,275.71x = 214,914.14 × 43,436.77
  4. Step 4: Simplify right side
    143,275.71x = 9,335,175,523.56
  5. Step 5: Solve for x
    x = 9,335,175,523.56/143,275.71
  6. Step 6: Final answer
    x = 65,155.33

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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.