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Finding the Fourth Proportional to 339,441.22, 508,386.80 and 162,072.78

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Solution

The fourth proportional to 339,441.22, 508,386.80 and 162,072.78 is: 242,739.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,441.22 : 508,386.80 = 162,072.78 : x
  2. Step 2: Convert to fraction form
    339,441.22/508,386.80 = 162,072.78/x
  3. Step 3: Cross multiply
    339,441.22x = 508,386.80 × 162,072.78
  4. Step 4: Simplify right side
    339,441.22x = 82,395,661,991.30
  5. Step 5: Solve for x
    x = 82,395,661,991.30/339,441.22
  6. Step 6: Final answer
    x = 242,739.12

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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.