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Finding the Fourth Proportional to 323,596.89, 485,014.10 and 145,895.85

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Solution

The fourth proportional to 323,596.89, 485,014.10 and 145,895.85 is: 218,671.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,596.89 : 485,014.10 = 145,895.85 : x
  2. Step 2: Convert to fraction form
    323,596.89/485,014.10 = 145,895.85/x
  3. Step 3: Cross multiply
    323,596.89x = 485,014.10 × 145,895.85
  4. Step 4: Simplify right side
    323,596.89x = 70,761,543,652.01
  5. Step 5: Solve for x
    x = 70,761,543,652.01/323,596.89
  6. Step 6: Final answer
    x = 218,671.89

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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.