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Finding the Fourth Proportional to 208,391.69, 312,585.09 and 50,620.29

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Solution

The fourth proportional to 208,391.69, 312,585.09 and 50,620.29 is: 75,929.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,391.69 : 312,585.09 = 50,620.29 : x
  2. Step 2: Convert to fraction form
    208,391.69/312,585.09 = 50,620.29/x
  3. Step 3: Cross multiply
    208,391.69x = 312,585.09 × 50,620.29
  4. Step 4: Simplify right side
    208,391.69x = 15,823,147,905.48
  5. Step 5: Solve for x
    x = 15,823,147,905.48/208,391.69
  6. Step 6: Final answer
    x = 75,929.84

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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.