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Finding the Fourth Proportional to 208,863.55, 288,227.32 and 118,217.26

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Solution

The fourth proportional to 208,863.55, 288,227.32 and 118,217.26 is: 163,137.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,863.55 : 288,227.32 = 118,217.26 : x
  2. Step 2: Convert to fraction form
    208,863.55/288,227.32 = 118,217.26/x
  3. Step 3: Cross multiply
    208,863.55x = 288,227.32 × 118,217.26
  4. Step 4: Simplify right side
    208,863.55x = 34,073,444,027.54
  5. Step 5: Solve for x
    x = 34,073,444,027.54/208,863.55
  6. Step 6: Final answer
    x = 163,137.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.