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Finding the Fourth Proportional to 665,529.20, 998,439.60 and 266,069.60

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Solution

The fourth proportional to 665,529.20, 998,439.60 and 266,069.60 is: 399,162.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,529.20 : 998,439.60 = 266,069.60 : x
  2. Step 2: Convert to fraction form
    665,529.20/998,439.60 = 266,069.60/x
  3. Step 3: Cross multiply
    665,529.20x = 998,439.60 × 266,069.60
  4. Step 4: Simplify right side
    665,529.20x = 265,654,424,996.16
  5. Step 5: Solve for x
    x = 265,654,424,996.16/665,529.20
  6. Step 6: Final answer
    x = 399,162.69

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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.