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Finding the Fourth Proportional to 303,218.20, 454,827.30 and 103,520.80

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Solution

The fourth proportional to 303,218.20, 454,827.30 and 103,520.80 is: 155,281.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,218.20 : 454,827.30 = 103,520.80 : x
  2. Step 2: Convert to fraction form
    303,218.20/454,827.30 = 103,520.80/x
  3. Step 3: Cross multiply
    303,218.20x = 454,827.30 × 103,520.80
  4. Step 4: Simplify right side
    303,218.20x = 47,084,085,957.84
  5. Step 5: Solve for x
    x = 47,084,085,957.84/303,218.20
  6. Step 6: Final answer
    x = 155,281.20

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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.