Home / 305,867.82-458,899.23-128,327.16

Finding the Fourth Proportional to 305,867.82, 458,899.23 and 128,327.16

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Solution

The fourth proportional to 305,867.82, 458,899.23 and 128,327.16 is: 192,531.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,867.82 : 458,899.23 = 128,327.16 : x
  2. Step 2: Convert to fraction form
    305,867.82/458,899.23 = 128,327.16/x
  3. Step 3: Cross multiply
    305,867.82x = 458,899.23 × 128,327.16
  4. Step 4: Simplify right side
    305,867.82x = 58,889,234,912.09
  5. Step 5: Solve for x
    x = 58,889,234,912.09/305,867.82
  6. Step 6: Final answer
    x = 192,531.65

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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.