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Finding the Fourth Proportional to 511,975.80, 768,401.10 and 228,103.20

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Solution

The fourth proportional to 511,975.80, 768,401.10 and 228,103.20 is: 342,349.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,975.80 : 768,401.10 = 228,103.20 : x
  2. Step 2: Convert to fraction form
    511,975.80/768,401.10 = 228,103.20/x
  3. Step 3: Cross multiply
    511,975.80x = 768,401.10 × 228,103.20
  4. Step 4: Simplify right side
    511,975.80x = 175,274,749,793.52
  5. Step 5: Solve for x
    x = 175,274,749,793.52/511,975.80
  6. Step 6: Final answer
    x = 342,349.68

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1.5x scale

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.