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Finding the Fourth Proportional to 665,637.20, 998,601.60 and 266,177.60

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Solution

The fourth proportional to 665,637.20, 998,601.60 and 266,177.60 is: 399,324.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,637.20 : 998,601.60 = 266,177.60 : x
  2. Step 2: Convert to fraction form
    665,637.20/998,601.60 = 266,177.60/x
  3. Step 3: Cross multiply
    665,637.20x = 998,601.60 × 266,177.60
  4. Step 4: Simplify right side
    665,637.20x = 265,805,377,244.16
  5. Step 5: Solve for x
    x = 265,805,377,244.16/665,637.20
  6. Step 6: Final answer
    x = 399,324.70

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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.