Home / 487,942.21-731,351.71-188,290.27

Finding the Fourth Proportional to 487,942.21, 731,351.71 and 188,290.27

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Solution

The fourth proportional to 487,942.21, 731,351.71 and 188,290.27 is: 282,218.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,942.21 : 731,351.71 = 188,290.27 : x
  2. Step 2: Convert to fraction form
    487,942.21/731,351.71 = 188,290.27/x
  3. Step 3: Cross multiply
    487,942.21x = 731,351.71 × 188,290.27
  4. Step 4: Simplify right side
    487,942.21x = 137,706,410,940.86
  5. Step 5: Solve for x
    x = 137,706,410,940.86/487,942.21
  6. Step 6: Final answer
    x = 282,218.69

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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.