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Finding the Fourth Proportional to 328,200.66, 492,301.05 and 103,578.57

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Solution

The fourth proportional to 328,200.66, 492,301.05 and 103,578.57 is: 155,367.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,200.66 : 492,301.05 = 103,578.57 : x
  2. Step 2: Convert to fraction form
    328,200.66/492,301.05 = 103,578.57/x
  3. Step 3: Cross multiply
    328,200.66x = 492,301.05 × 103,578.57
  4. Step 4: Simplify right side
    328,200.66x = 50,991,838,768.50
  5. Step 5: Solve for x
    x = 50,991,838,768.50/328,200.66
  6. Step 6: Final answer
    x = 155,367.87

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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.