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Finding the Fourth Proportional to 216,737.97, 299,091.45 and 121,242.61

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Solution

The fourth proportional to 216,737.97, 299,091.45 and 121,242.61 is: 167,310.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,737.97 : 299,091.45 = 121,242.61 : x
  2. Step 2: Convert to fraction form
    216,737.97/299,091.45 = 121,242.61/x
  3. Step 3: Cross multiply
    216,737.97x = 299,091.45 × 121,242.61
  4. Step 4: Simplify right side
    216,737.97x = 36,262,628,026.68
  5. Step 5: Solve for x
    x = 36,262,628,026.68/216,737.97
  6. Step 6: Final answer
    x = 167,310.91

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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.