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Finding the Fourth Proportional to 208,391.52, 312,587.26 and 50,618.91

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Solution

The fourth proportional to 208,391.52, 312,587.26 and 50,618.91 is: 75,928.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,391.52 : 312,587.26 = 50,618.91 : x
  2. Step 2: Convert to fraction form
    208,391.52/312,587.26 = 50,618.91/x
  3. Step 3: Cross multiply
    208,391.52x = 312,587.26 × 50,618.91
  4. Step 4: Simplify right side
    208,391.52x = 15,822,826,381.09
  5. Step 5: Solve for x
    x = 15,822,826,381.09/208,391.52
  6. Step 6: Final answer
    x = 75,928.36

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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.