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Finding the Fourth Proportional to 447,065.36, 670,596.96 and 131,521.76

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Solution

The fourth proportional to 447,065.36, 670,596.96 and 131,521.76 is: 197,282.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,065.36 : 670,596.96 = 131,521.76 : x
  2. Step 2: Convert to fraction form
    447,065.36/670,596.96 = 131,521.76/x
  3. Step 3: Cross multiply
    447,065.36x = 670,596.96 × 131,521.76
  4. Step 4: Simplify right side
    447,065.36x = 88,198,092,429.85
  5. Step 5: Solve for x
    x = 88,198,092,429.85/447,065.36
  6. Step 6: Final answer
    x = 197,282.32

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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.