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Finding the Fourth Proportional to 339,625, 509,515.26 and 118,009

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Solution

The fourth proportional to 339,625, 509,515.26 and 118,009 is: 177,040.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,625 : 509,515.26 = 118,009 : x
  2. Step 2: Convert to fraction form
    339,625/509,515.26 = 118,009/x
  3. Step 3: Cross multiply
    339,625x = 509,515.26 × 118,009
  4. Step 4: Simplify right side
    339,625x = 60,127,386,317.34
  5. Step 5: Solve for x
    x = 60,127,386,317.34/339,625
  6. Step 6: Final answer
    x = 177,040.52

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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.