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Finding the Fourth Proportional to 447,243.75, 670,869.18 and 163,137.87

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Solution

The fourth proportional to 447,243.75, 670,869.18 and 163,137.87 is: 244,708.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,243.75 : 670,869.18 = 163,137.87 : x
  2. Step 2: Convert to fraction form
    447,243.75/670,869.18 = 163,137.87/x
  3. Step 3: Cross multiply
    447,243.75x = 670,869.18 × 163,137.87
  4. Step 4: Simplify right side
    447,243.75x = 109,444,169,073.85
  5. Step 5: Solve for x
    x = 109,444,169,073.85/447,243.75
  6. Step 6: Final answer
    x = 244,708.10

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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.