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Finding the Fourth Proportional to 665,356.17, 998,033.24 and 266,090.57

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Solution

The fourth proportional to 665,356.17, 998,033.24 and 266,090.57 is: 399,135.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,356.17 : 998,033.24 = 266,090.57 : x
  2. Step 2: Convert to fraction form
    665,356.17/998,033.24 = 266,090.57/x
  3. Step 3: Cross multiply
    665,356.17x = 998,033.24 × 266,090.57
  4. Step 4: Simplify right side
    665,356.17x = 265,567,228,720.38
  5. Step 5: Solve for x
    x = 265,567,228,720.38/665,356.17
  6. Step 6: Final answer
    x = 399,135.44

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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.