Home / 336,986.72-505,470.32-137,257.70

Finding the Fourth Proportional to 336,986.72, 505,470.32 and 137,257.70

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Solution

The fourth proportional to 336,986.72, 505,470.32 and 137,257.70 is: 205,882.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,986.72 : 505,470.32 = 137,257.70 : x
  2. Step 2: Convert to fraction form
    336,986.72/505,470.32 = 137,257.70/x
  3. Step 3: Cross multiply
    336,986.72x = 505,470.32 × 137,257.70
  4. Step 4: Simplify right side
    336,986.72x = 69,379,693,541.46
  5. Step 5: Solve for x
    x = 69,379,693,541.46/336,986.72
  6. Step 6: Final answer
    x = 205,882.57

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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.