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Finding the Fourth Proportional to 303,128.80, 454,401.60 and 235,623.40

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Solution

The fourth proportional to 303,128.80, 454,401.60 and 235,623.40 is: 353,208.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,128.80 : 454,401.60 = 235,623.40 : x
  2. Step 2: Convert to fraction form
    303,128.80/454,401.60 = 235,623.40/x
  3. Step 3: Cross multiply
    303,128.80x = 454,401.60 × 235,623.40
  4. Step 4: Simplify right side
    303,128.80x = 107,067,649,957.44
  5. Step 5: Solve for x
    x = 107,067,649,957.44/303,128.80
  6. Step 6: Final answer
    x = 353,208.44

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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.