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Finding the Fourth Proportional to 198,629.20, 297,880.60 and 65,484.64

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Solution

The fourth proportional to 198,629.20, 297,880.60 and 65,484.64 is: 98,206.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,629.20 : 297,880.60 = 65,484.64 : x
  2. Step 2: Convert to fraction form
    198,629.20/297,880.60 = 65,484.64/x
  3. Step 3: Cross multiply
    198,629.20x = 297,880.60 × 65,484.64
  4. Step 4: Simplify right side
    198,629.20x = 19,506,603,853.98
  5. Step 5: Solve for x
    x = 19,506,603,853.98/198,629.20
  6. Step 6: Final answer
    x = 98,206.12

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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.