Home / 305,128.24-457,723.12-80,504.20

Finding the Fourth Proportional to 305,128.24, 457,723.12 and 80,504.20

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Solution

The fourth proportional to 305,128.24, 457,723.12 and 80,504.20 is: 120,764.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,128.24 : 457,723.12 = 80,504.20 : x
  2. Step 2: Convert to fraction form
    305,128.24/457,723.12 = 80,504.20/x
  3. Step 3: Cross multiply
    305,128.24x = 457,723.12 × 80,504.20
  4. Step 4: Simplify right side
    305,128.24x = 36,848,633,597.10
  5. Step 5: Solve for x
    x = 36,848,633,597.10/305,128.24
  6. Step 6: Final answer
    x = 120,764.42

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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.