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Finding the Fourth Proportional to 143,491.88, 215,238.90 and 49,997.48

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Solution

The fourth proportional to 143,491.88, 215,238.90 and 49,997.48 is: 74,996.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,491.88 : 215,238.90 = 49,997.48 : x
  2. Step 2: Convert to fraction form
    143,491.88/215,238.90 = 49,997.48/x
  3. Step 3: Cross multiply
    143,491.88x = 215,238.90 × 49,997.48
  4. Step 4: Simplify right side
    143,491.88x = 10,761,402,597.97
  5. Step 5: Solve for x
    x = 10,761,402,597.97/143,491.88
  6. Step 6: Final answer
    x = 74,996.60

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1.5x scale

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.