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Finding the Fourth Proportional to 216,836.54, 325,079.49 and 90,573.51

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Solution

The fourth proportional to 216,836.54, 325,079.49 and 90,573.51 is: 135,787.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,836.54 : 325,079.49 = 90,573.51 : x
  2. Step 2: Convert to fraction form
    216,836.54/325,079.49 = 90,573.51/x
  3. Step 3: Cross multiply
    216,836.54x = 325,079.49 × 90,573.51
  4. Step 4: Simplify right side
    216,836.54x = 29,443,590,438.31
  5. Step 5: Solve for x
    x = 29,443,590,438.31/216,836.54
  6. Step 6: Final answer
    x = 135,787.04

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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.