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Finding the Fourth Proportional to 305,715.44, 458,594.22 and 128,043.56

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Solution

The fourth proportional to 305,715.44, 458,594.22 and 128,043.56 is: 192,074.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,715.44 : 458,594.22 = 128,043.56 : x
  2. Step 2: Convert to fraction form
    305,715.44/458,594.22 = 128,043.56/x
  3. Step 3: Cross multiply
    305,715.44x = 458,594.22 × 128,043.56
  4. Step 4: Simplify right side
    305,715.44x = 58,720,036,524.22
  5. Step 5: Solve for x
    x = 58,720,036,524.22/305,715.44
  6. Step 6: Final answer
    x = 192,074.16

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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.