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Finding the Fourth Proportional to 322,629.60, 483,944.40 and 86,008.80

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Solution

The fourth proportional to 322,629.60, 483,944.40 and 86,008.80 is: 129,013.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,629.60 : 483,944.40 = 86,008.80 : x
  2. Step 2: Convert to fraction form
    322,629.60/483,944.40 = 86,008.80/x
  3. Step 3: Cross multiply
    322,629.60x = 483,944.40 × 86,008.80
  4. Step 4: Simplify right side
    322,629.60x = 41,623,477,110.72
  5. Step 5: Solve for x
    x = 41,623,477,110.72/322,629.60
  6. Step 6: Final answer
    x = 129,013.20

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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.