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Finding the Fourth Proportional to 421,906.92, 582,209.20 and 230,883.40

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Solution

The fourth proportional to 421,906.92, 582,209.20 and 230,883.40 is: 318,606.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,906.92 : 582,209.20 = 230,883.40 : x
  2. Step 2: Convert to fraction form
    421,906.92/582,209.20 = 230,883.40/x
  3. Step 3: Cross multiply
    421,906.92x = 582,209.20 × 230,883.40
  4. Step 4: Simplify right side
    421,906.92x = 134,422,439,607.28
  5. Step 5: Solve for x
    x = 134,422,439,607.28/421,906.92
  6. Step 6: Final answer
    x = 318,606.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.