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Finding the Fourth Proportional to 499,899.40, 749,265.90 and 200,231.80

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Solution

The fourth proportional to 499,899.40, 749,265.90 and 200,231.80 is: 300,114.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,899.40 : 749,265.90 = 200,231.80 : x
  2. Step 2: Convert to fraction form
    499,899.40/749,265.90 = 200,231.80/x
  3. Step 3: Cross multiply
    499,899.40x = 749,265.90 × 200,231.80
  4. Step 4: Simplify right side
    499,899.40x = 150,026,859,835.62
  5. Step 5: Solve for x
    x = 150,026,859,835.62/499,899.40
  6. Step 6: Final answer
    x = 300,114.10

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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.