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Finding the Fourth Proportional to 325,977.68, 488,961.33 and 89,320.37

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Solution

The fourth proportional to 325,977.68, 488,961.33 and 89,320.37 is: 133,979.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,977.68 : 488,961.33 = 89,320.37 : x
  2. Step 2: Convert to fraction form
    325,977.68/488,961.33 = 89,320.37/x
  3. Step 3: Cross multiply
    325,977.68x = 488,961.33 × 89,320.37
  4. Step 4: Simplify right side
    325,977.68x = 43,674,204,633.96
  5. Step 5: Solve for x
    x = 43,674,204,633.96/325,977.68
  6. Step 6: Final answer
    x = 133,979.12

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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.