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Finding the Fourth Proportional to 216,511.25, 298,791.81 and 118,400.25

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Solution

The fourth proportional to 216,511.25, 298,791.81 and 118,400.25 is: 163,395.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,511.25 : 298,791.81 = 118,400.25 : x
  2. Step 2: Convert to fraction form
    216,511.25/298,791.81 = 118,400.25/x
  3. Step 3: Cross multiply
    216,511.25x = 298,791.81 × 118,400.25
  4. Step 4: Simplify right side
    216,511.25x = 35,377,026,920.54
  5. Step 5: Solve for x
    x = 35,377,026,920.54/216,511.25
  6. Step 6: Final answer
    x = 163,395.79

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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.