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Finding the Fourth Proportional to 328,651.87, 492,928.39 and 103,983.07

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Solution

The fourth proportional to 328,651.87, 492,928.39 and 103,983.07 is: 155,958.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,651.87 : 492,928.39 = 103,983.07 : x
  2. Step 2: Convert to fraction form
    328,651.87/492,928.39 = 103,983.07/x
  3. Step 3: Cross multiply
    328,651.87x = 492,928.39 × 103,983.07
  4. Step 4: Simplify right side
    328,651.87x = 51,256,208,252.31
  5. Step 5: Solve for x
    x = 51,256,208,252.31/328,651.87
  6. Step 6: Final answer
    x = 155,958.97

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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.