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Finding the Fourth Proportional to 253,271.96, 379,719.18 and 84,692.60

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Solution

The fourth proportional to 253,271.96, 379,719.18 and 84,692.60 is: 126,975.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,271.96 : 379,719.18 = 84,692.60 : x
  2. Step 2: Convert to fraction form
    253,271.96/379,719.18 = 84,692.60/x
  3. Step 3: Cross multiply
    253,271.96x = 379,719.18 × 84,692.60
  4. Step 4: Simplify right side
    253,271.96x = 32,159,404,624.07
  5. Step 5: Solve for x
    x = 32,159,404,624.07/253,271.96
  6. Step 6: Final answer
    x = 126,975.78

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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.