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Finding the Fourth Proportional to 243,338.20, 365,007.30 and 65,872.60

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Solution

The fourth proportional to 243,338.20, 365,007.30 and 65,872.60 is: 98,808.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,338.20 : 365,007.30 = 65,872.60 : x
  2. Step 2: Convert to fraction form
    243,338.20/365,007.30 = 65,872.60/x
  3. Step 3: Cross multiply
    243,338.20x = 365,007.30 × 65,872.60
  4. Step 4: Simplify right side
    243,338.20x = 24,043,979,869.98
  5. Step 5: Solve for x
    x = 24,043,979,869.98/243,338.20
  6. Step 6: Final answer
    x = 98,808.90

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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.