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Finding the Fourth Proportional to 322,483.60, 483,725.40 and 85,850.20

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Solution

The fourth proportional to 322,483.60, 483,725.40 and 85,850.20 is: 128,775.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,483.60 : 483,725.40 = 85,850.20 : x
  2. Step 2: Convert to fraction form
    322,483.60/483,725.40 = 85,850.20/x
  3. Step 3: Cross multiply
    322,483.60x = 483,725.40 × 85,850.20
  4. Step 4: Simplify right side
    322,483.60x = 41,527,922,335.08
  5. Step 5: Solve for x
    x = 41,527,922,335.08/322,483.60
  6. Step 6: Final answer
    x = 128,775.30

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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.