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Finding the Fourth Proportional to 303,299.31, 455,018.97 and 90,062.49

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Solution

The fourth proportional to 303,299.31, 455,018.97 and 90,062.49 is: 135,114.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,299.31 : 455,018.97 = 90,062.49 : x
  2. Step 2: Convert to fraction form
    303,299.31/455,018.97 = 90,062.49/x
  3. Step 3: Cross multiply
    303,299.31x = 455,018.97 × 90,062.49
  4. Step 4: Simplify right side
    303,299.31x = 40,980,141,435.44
  5. Step 5: Solve for x
    x = 40,980,141,435.44/303,299.31
  6. Step 6: Final answer
    x = 135,114.52

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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.