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Finding the Fourth Proportional to 490,099.20, 735,148.80 and 330,666.90

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Solution

The fourth proportional to 490,099.20, 735,148.80 and 330,666.90 is: 496,000.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,099.20 : 735,148.80 = 330,666.90 : x
  2. Step 2: Convert to fraction form
    490,099.20/735,148.80 = 330,666.90/x
  3. Step 3: Cross multiply
    490,099.20x = 735,148.80 × 330,666.90
  4. Step 4: Simplify right side
    490,099.20x = 243,089,374,734.72
  5. Step 5: Solve for x
    x = 243,089,374,734.72/490,099.20
  6. Step 6: Final answer
    x = 496,000.35

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Similar ratio
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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.