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Finding the Fourth Proportional to 256,520.75, 384,832.16 and 79,020.19

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Solution

The fourth proportional to 256,520.75, 384,832.16 and 79,020.19 is: 118,546.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,520.75 : 384,832.16 = 79,020.19 : x
  2. Step 2: Convert to fraction form
    256,520.75/384,832.16 = 79,020.19/x
  3. Step 3: Cross multiply
    256,520.75x = 384,832.16 × 79,020.19
  4. Step 4: Simplify right side
    256,520.75x = 30,409,508,082.05
  5. Step 5: Solve for x
    x = 30,409,508,082.05/256,520.75
  6. Step 6: Final answer
    x = 118,546.00

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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.