Home / 339,351.07-509,092.20-128,972.60

Finding the Fourth Proportional to 339,351.07, 509,092.20 and 128,972.60

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Solution

The fourth proportional to 339,351.07, 509,092.20 and 128,972.60 is: 193,483.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,351.07 : 509,092.20 = 128,972.60 : x
  2. Step 2: Convert to fraction form
    339,351.07/509,092.20 = 128,972.60/x
  3. Step 3: Cross multiply
    339,351.07x = 509,092.20 × 128,972.60
  4. Step 4: Simplify right side
    339,351.07x = 65,658,944,673.72
  5. Step 5: Solve for x
    x = 65,658,944,673.72/339,351.07
  6. Step 6: Final answer
    x = 193,483.83

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1.5x scale

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.