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Finding the Fourth Proportional to 216,851.25, 299,439.41 and 136,413.39

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Solution

The fourth proportional to 216,851.25, 299,439.41 and 136,413.39 is: 188,366.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,851.25 : 299,439.41 = 136,413.39 : x
  2. Step 2: Convert to fraction form
    216,851.25/299,439.41 = 136,413.39/x
  3. Step 3: Cross multiply
    216,851.25x = 299,439.41 × 136,413.39
  4. Step 4: Simplify right side
    216,851.25x = 40,847,544,335.63
  5. Step 5: Solve for x
    x = 40,847,544,335.63/216,851.25
  6. Step 6: Final answer
    x = 188,366.65

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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.