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Finding the Fourth Proportional to 339,405.38, 509,100.19 and 170,880.47

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Solution

The fourth proportional to 339,405.38, 509,100.19 and 170,880.47 is: 256,316.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,405.38 : 509,100.19 = 170,880.47 : x
  2. Step 2: Convert to fraction form
    339,405.38/509,100.19 = 170,880.47/x
  3. Step 3: Cross multiply
    339,405.38x = 509,100.19 × 170,880.47
  4. Step 4: Simplify right side
    339,405.38x = 86,995,276,771.59
  5. Step 5: Solve for x
    x = 86,995,276,771.59/339,405.38
  6. Step 6: Final answer
    x = 256,316.73

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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.