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Finding the Fourth Proportional to 393,371.76, 589,499.56 and 303,072.88

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Solution

The fourth proportional to 393,371.76, 589,499.56 and 303,072.88 is: 454,179.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,371.76 : 589,499.56 = 303,072.88 : x
  2. Step 2: Convert to fraction form
    393,371.76/589,499.56 = 303,072.88/x
  3. Step 3: Cross multiply
    393,371.76x = 589,499.56 × 303,072.88
  4. Step 4: Simplify right side
    393,371.76x = 178,661,329,407.93
  5. Step 5: Solve for x
    x = 178,661,329,407.93/393,371.76
  6. Step 6: Final answer
    x = 454,179.35

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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.