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Finding the Fourth Proportional to 328,781.88, 492,776.22 and 160,049.28

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Solution

The fourth proportional to 328,781.88, 492,776.22 and 160,049.28 is: 239,880.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,781.88 : 492,776.22 = 160,049.28 : x
  2. Step 2: Convert to fraction form
    328,781.88/492,776.22 = 160,049.28/x
  3. Step 3: Cross multiply
    328,781.88x = 492,776.22 × 160,049.28
  4. Step 4: Simplify right side
    328,781.88x = 78,868,479,212.12
  5. Step 5: Solve for x
    x = 78,868,479,212.12/328,781.88
  6. Step 6: Final answer
    x = 239,880.86

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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.