Home / 339,986.20-509,979.30-118,370.20

Finding the Fourth Proportional to 339,986.20, 509,979.30 and 118,370.20

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Solution

The fourth proportional to 339,986.20, 509,979.30 and 118,370.20 is: 177,555.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,986.20 : 509,979.30 = 118,370.20 : x
  2. Step 2: Convert to fraction form
    339,986.20/509,979.30 = 118,370.20/x
  3. Step 3: Cross multiply
    339,986.20x = 509,979.30 × 118,370.20
  4. Step 4: Simplify right side
    339,986.20x = 60,366,351,736.86
  5. Step 5: Solve for x
    x = 60,366,351,736.86/339,986.20
  6. Step 6: Final answer
    x = 177,555.30

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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.