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Finding the Fourth Proportional to 654,448.55, 981,665.46 and 255,369.65

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Solution

The fourth proportional to 654,448.55, 981,665.46 and 255,369.65 is: 383,051.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,448.55 : 981,665.46 = 255,369.65 : x
  2. Step 2: Convert to fraction form
    654,448.55/981,665.46 = 255,369.65/x
  3. Step 3: Cross multiply
    654,448.55x = 981,665.46 × 255,369.65
  4. Step 4: Simplify right side
    654,448.55x = 250,687,560,028.96
  5. Step 5: Solve for x
    x = 250,687,560,028.96/654,448.55
  6. Step 6: Final answer
    x = 383,051.60

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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.