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Finding the Fourth Proportional to 208,239.90, 312,357.08 and 50,469.72

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Solution

The fourth proportional to 208,239.90, 312,357.08 and 50,469.72 is: 75,703.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,239.90 : 312,357.08 = 50,469.72 : x
  2. Step 2: Convert to fraction form
    208,239.90/312,357.08 = 50,469.72/x
  3. Step 3: Cross multiply
    208,239.90x = 312,357.08 × 50,469.72
  4. Step 4: Simplify right side
    208,239.90x = 15,764,574,367.62
  5. Step 5: Solve for x
    x = 15,764,574,367.62/208,239.90
  6. Step 6: Final answer
    x = 75,703.91

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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.