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Finding the Fourth Proportional to 322,441.76, 483,662 and 85,784.72

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Solution

The fourth proportional to 322,441.76, 483,662 and 85,784.72 is: 128,676.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,441.76 : 483,662 = 85,784.72 : x
  2. Step 2: Convert to fraction form
    322,441.76/483,662 = 85,784.72/x
  3. Step 3: Cross multiply
    322,441.76x = 483,662 × 85,784.72
  4. Step 4: Simplify right side
    322,441.76x = 41,490,809,244.64
  5. Step 5: Solve for x
    x = 41,490,809,244.64/322,441.76
  6. Step 6: Final answer
    x = 128,676.91

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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.