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Finding the Fourth Proportional to 325,728.40, 488,576.40 and 167,972.80

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Solution

The fourth proportional to 325,728.40, 488,576.40 and 167,972.80 is: 251,950.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,728.40 : 488,576.40 = 167,972.80 : x
  2. Step 2: Convert to fraction form
    325,728.40/488,576.40 = 167,972.80/x
  3. Step 3: Cross multiply
    325,728.40x = 488,576.40 × 167,972.80
  4. Step 4: Simplify right side
    325,728.40x = 82,067,545,921.92
  5. Step 5: Solve for x
    x = 82,067,545,921.92/325,728.40
  6. Step 6: Final answer
    x = 251,950.85

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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.