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Finding the Fourth Proportional to 486,620.68, 729,923.46 and 149,665.72

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Solution

The fourth proportional to 486,620.68, 729,923.46 and 149,665.72 is: 224,496.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,620.68 : 729,923.46 = 149,665.72 : x
  2. Step 2: Convert to fraction form
    486,620.68/729,923.46 = 149,665.72/x
  3. Step 3: Cross multiply
    486,620.68x = 729,923.46 × 149,665.72
  4. Step 4: Simplify right side
    486,620.68x = 109,244,520,185.79
  5. Step 5: Solve for x
    x = 109,244,520,185.79/486,620.68
  6. Step 6: Final answer
    x = 224,496.25

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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.