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Finding the Fourth Proportional to 322,591.80, 483,789.28 and 85,903.80

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Solution

The fourth proportional to 322,591.80, 483,789.28 and 85,903.80 is: 128,829.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,591.80 : 483,789.28 = 85,903.80 : x
  2. Step 2: Convert to fraction form
    322,591.80/483,789.28 = 85,903.80/x
  3. Step 3: Cross multiply
    322,591.80x = 483,789.28 × 85,903.80
  4. Step 4: Simplify right side
    322,591.80x = 41,559,337,551.26
  5. Step 5: Solve for x
    x = 41,559,337,551.26/322,591.80
  6. Step 6: Final answer
    x = 128,829.49

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1.5x scale

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.