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Finding the Fourth Proportional to 339,349.25, 509,023.39 and 86,629.74

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Solution

The fourth proportional to 339,349.25, 509,023.39 and 86,629.74 is: 129,944.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,349.25 : 509,023.39 = 86,629.74 : x
  2. Step 2: Convert to fraction form
    339,349.25/509,023.39 = 86,629.74/x
  3. Step 3: Cross multiply
    339,349.25x = 509,023.39 × 86,629.74
  4. Step 4: Simplify right side
    339,349.25x = 44,096,561,966.64
  5. Step 5: Solve for x
    x = 44,096,561,966.64/339,349.25
  6. Step 6: Final answer
    x = 129,944.48

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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.