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Finding the Fourth Proportional to 385,267.60, 577,123.80 and 218,861.20

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Solution

The fourth proportional to 385,267.60, 577,123.80 and 218,861.20 is: 327,850.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,267.60 : 577,123.80 = 218,861.20 : x
  2. Step 2: Convert to fraction form
    385,267.60/577,123.80 = 218,861.20/x
  3. Step 3: Cross multiply
    385,267.60x = 577,123.80 × 218,861.20
  4. Step 4: Simplify right side
    385,267.60x = 126,310,007,416.56
  5. Step 5: Solve for x
    x = 126,310,007,416.56/385,267.60
  6. Step 6: Final answer
    x = 327,850.06

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.