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Finding the Fourth Proportional to 308,028.53, 424,920.16 and 194,916.89

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Solution

The fourth proportional to 308,028.53, 424,920.16 and 194,916.89 is: 268,884.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,028.53 : 424,920.16 = 194,916.89 : x
  2. Step 2: Convert to fraction form
    308,028.53/424,920.16 = 194,916.89/x
  3. Step 3: Cross multiply
    308,028.53x = 424,920.16 × 194,916.89
  4. Step 4: Simplify right side
    308,028.53x = 82,824,117,391.45
  5. Step 5: Solve for x
    x = 82,824,117,391.45/308,028.53
  6. Step 6: Final answer
    x = 268,884.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.