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Finding the Fourth Proportional to 143,326.86, 214,990.74 and 43,487.88

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Solution

The fourth proportional to 143,326.86, 214,990.74 and 43,487.88 is: 65,231.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,326.86 : 214,990.74 = 43,487.88 : x
  2. Step 2: Convert to fraction form
    143,326.86/214,990.74 = 43,487.88/x
  3. Step 3: Cross multiply
    143,326.86x = 214,990.74 × 43,487.88
  4. Step 4: Simplify right side
    143,326.86x = 9,349,491,502.23
  5. Step 5: Solve for x
    x = 9,349,491,502.23/143,326.86
  6. Step 6: Final answer
    x = 65,231.96

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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.