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Finding the Fourth Proportional to 322,656.64, 484,008 and 85,998.08

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Solution

The fourth proportional to 322,656.64, 484,008 and 85,998.08 is: 129,003.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,656.64 : 484,008 = 85,998.08 : x
  2. Step 2: Convert to fraction form
    322,656.64/484,008 = 85,998.08/x
  3. Step 3: Cross multiply
    322,656.64x = 484,008 × 85,998.08
  4. Step 4: Simplify right side
    322,656.64x = 41,623,758,704.64
  5. Step 5: Solve for x
    x = 41,623,758,704.64/322,656.64
  6. Step 6: Final answer
    x = 129,003.26

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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.