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Finding the Fourth Proportional to 303,210.20, 454,815.30 and 103,512.80

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Solution

The fourth proportional to 303,210.20, 454,815.30 and 103,512.80 is: 155,269.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,210.20 : 454,815.30 = 103,512.80 : x
  2. Step 2: Convert to fraction form
    303,210.20/454,815.30 = 103,512.80/x
  3. Step 3: Cross multiply
    303,210.20x = 454,815.30 × 103,512.80
  4. Step 4: Simplify right side
    303,210.20x = 47,079,205,185.84
  5. Step 5: Solve for x
    x = 47,079,205,185.84/303,210.20
  6. Step 6: Final answer
    x = 155,269.20

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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.