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Finding the Fourth Proportional to 490,269.60, 734,626.80 and 323,863.20

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Solution

The fourth proportional to 490,269.60, 734,626.80 and 323,863.20 is: 485,281.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,269.60 : 734,626.80 = 323,863.20 : x
  2. Step 2: Convert to fraction form
    490,269.60/734,626.80 = 323,863.20/x
  3. Step 3: Cross multiply
    490,269.60x = 734,626.80 × 323,863.20
  4. Step 4: Simplify right side
    490,269.60x = 237,918,586,253.76
  5. Step 5: Solve for x
    x = 237,918,586,253.76/490,269.60
  6. Step 6: Final answer
    x = 485,281.13

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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.