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Finding the Fourth Proportional to 499,234.60, 748,855.10 and 199,740.20

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Solution

The fourth proportional to 499,234.60, 748,855.10 and 199,740.20 is: 299,611.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,234.60 : 748,855.10 = 199,740.20 : x
  2. Step 2: Convert to fraction form
    499,234.60/748,855.10 = 199,740.20/x
  3. Step 3: Cross multiply
    499,234.60x = 748,855.10 × 199,740.20
  4. Step 4: Simplify right side
    499,234.60x = 149,576,467,445.02
  5. Step 5: Solve for x
    x = 149,576,467,445.02/499,234.60
  6. Step 6: Final answer
    x = 299,611.58

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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.