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Finding the Fourth Proportional to 323,889.82, 485,817.21 and 99,250.90

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Solution

The fourth proportional to 323,889.82, 485,817.21 and 99,250.90 is: 148,870.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,889.82 : 485,817.21 = 99,250.90 : x
  2. Step 2: Convert to fraction form
    323,889.82/485,817.21 = 99,250.90/x
  3. Step 3: Cross multiply
    323,889.82x = 485,817.21 × 99,250.90
  4. Step 4: Simplify right side
    323,889.82x = 48,217,795,327.99
  5. Step 5: Solve for x
    x = 48,217,795,327.99/323,889.82
  6. Step 6: Final answer
    x = 148,870.98

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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.