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Finding the Fourth Proportional to 202,836.20, 304,440.30 and 103,065.80

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Solution

The fourth proportional to 202,836.20, 304,440.30 and 103,065.80 is: 154,693.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,836.20 : 304,440.30 = 103,065.80 : x
  2. Step 2: Convert to fraction form
    202,836.20/304,440.30 = 103,065.80/x
  3. Step 3: Cross multiply
    202,836.20x = 304,440.30 × 103,065.80
  4. Step 4: Simplify right side
    202,836.20x = 31,377,383,071.74
  5. Step 5: Solve for x
    x = 31,377,383,071.74/202,836.20
  6. Step 6: Final answer
    x = 154,693.21

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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.