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Finding the Fourth Proportional to 279,481.98, 385,692.04 and 152,164.56

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Solution

The fourth proportional to 279,481.98, 385,692.04 and 152,164.56 is: 209,990.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,481.98 : 385,692.04 = 152,164.56 : x
  2. Step 2: Convert to fraction form
    279,481.98/385,692.04 = 152,164.56/x
  3. Step 3: Cross multiply
    279,481.98x = 385,692.04 × 152,164.56
  4. Step 4: Simplify right side
    279,481.98x = 58,688,659,562.10
  5. Step 5: Solve for x
    x = 58,688,659,562.10/279,481.98
  6. Step 6: Final answer
    x = 209,990.85

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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.