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Finding the Fourth Proportional to 499,486.80, 749,230.20 and 200,013.60

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Solution

The fourth proportional to 499,486.80, 749,230.20 and 200,013.60 is: 300,020.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,486.80 : 749,230.20 = 200,013.60 : x
  2. Step 2: Convert to fraction form
    499,486.80/749,230.20 = 200,013.60/x
  3. Step 3: Cross multiply
    499,486.80x = 749,230.20 × 200,013.60
  4. Step 4: Simplify right side
    499,486.80x = 149,856,229,530.72
  5. Step 5: Solve for x
    x = 149,856,229,530.72/499,486.80
  6. Step 6: Final answer
    x = 300,020.40

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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.