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Finding the Fourth Proportional to 358,386.66, 494,516.88 and 205,395.38

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Solution

The fourth proportional to 358,386.66, 494,516.88 and 205,395.38 is: 283,413.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,386.66 : 494,516.88 = 205,395.38 : x
  2. Step 2: Convert to fraction form
    358,386.66/494,516.88 = 205,395.38/x
  3. Step 3: Cross multiply
    358,386.66x = 494,516.88 × 205,395.38
  4. Step 4: Simplify right side
    358,386.66x = 101,571,481,865.87
  5. Step 5: Solve for x
    x = 101,571,481,865.87/358,386.66
  6. Step 6: Final answer
    x = 283,413.12

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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.