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Finding the Fourth Proportional to 367,489.58, 551,019.78 and 142,587.34

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Solution

The fourth proportional to 367,489.58, 551,019.78 and 142,587.34 is: 213,797.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,489.58 : 551,019.78 = 142,587.34 : x
  2. Step 2: Convert to fraction form
    367,489.58/551,019.78 = 142,587.34/x
  3. Step 3: Cross multiply
    367,489.58x = 551,019.78 × 142,587.34
  4. Step 4: Simplify right side
    367,489.58x = 78,568,444,717.59
  5. Step 5: Solve for x
    x = 78,568,444,717.59/367,489.58
  6. Step 6: Final answer
    x = 213,797.75

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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.