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Finding the Fourth Proportional to 328,108, 492,209.52 and 103,392.40

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Solution

The fourth proportional to 328,108, 492,209.52 and 103,392.40 is: 155,103.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,108 : 492,209.52 = 103,392.40 : x
  2. Step 2: Convert to fraction form
    328,108/492,209.52 = 103,392.40/x
  3. Step 3: Cross multiply
    328,108x = 492,209.52 × 103,392.40
  4. Step 4: Simplify right side
    328,108x = 50,890,723,575.65
  5. Step 5: Solve for x
    x = 50,890,723,575.65/328,108
  6. Step 6: Final answer
    x = 155,103.57

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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.