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Finding the Fourth Proportional to 207,023.72, 285,489.78 and 131,441

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Solution

The fourth proportional to 207,023.72, 285,489.78 and 131,441 is: 181,259.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,023.72 : 285,489.78 = 131,441 : x
  2. Step 2: Convert to fraction form
    207,023.72/285,489.78 = 131,441/x
  3. Step 3: Cross multiply
    207,023.72x = 285,489.78 × 131,441
  4. Step 4: Simplify right side
    207,023.72x = 37,525,062,172.98
  5. Step 5: Solve for x
    x = 37,525,062,172.98/207,023.72
  6. Step 6: Final answer
    x = 181,259.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.