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Finding the Fourth Proportional to 200,365.91, 300,468.08 and 72,245.69

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Solution

The fourth proportional to 200,365.91, 300,468.08 and 72,245.69 is: 108,339.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,365.91 : 300,468.08 = 72,245.69 : x
  2. Step 2: Convert to fraction form
    200,365.91/300,468.08 = 72,245.69/x
  3. Step 3: Cross multiply
    200,365.91x = 300,468.08 × 72,245.69
  4. Step 4: Simplify right side
    200,365.91x = 21,707,521,899.01
  5. Step 5: Solve for x
    x = 21,707,521,899.01/200,365.91
  6. Step 6: Final answer
    x = 108,339.40

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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.