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Finding the Fourth Proportional to 358,993.76, 495,389.12 and 197,839.80

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Solution

The fourth proportional to 358,993.76, 495,389.12 and 197,839.80 is: 273,006.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,993.76 : 495,389.12 = 197,839.80 : x
  2. Step 2: Convert to fraction form
    358,993.76/495,389.12 = 197,839.80/x
  3. Step 3: Cross multiply
    358,993.76x = 495,389.12 × 197,839.80
  4. Step 4: Simplify right side
    358,993.76x = 98,007,684,422.98
  5. Step 5: Solve for x
    x = 98,007,684,422.98/358,993.76
  6. Step 6: Final answer
    x = 273,006.65

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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.