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Finding the Fourth Proportional to 339,807, 509,391.97 and 115,010.13

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Solution

The fourth proportional to 339,807, 509,391.97 and 115,010.13 is: 172,407.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,807 : 509,391.97 = 115,010.13 : x
  2. Step 2: Convert to fraction form
    339,807/509,391.97 = 115,010.13/x
  3. Step 3: Cross multiply
    339,807x = 509,391.97 × 115,010.13
  4. Step 4: Simplify right side
    339,807x = 58,585,236,403.13
  5. Step 5: Solve for x
    x = 58,585,236,403.13/339,807
  6. Step 6: Final answer
    x = 172,407.39

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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.