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Finding the Fourth Proportional to 208,379.73, 310,739.39 and 206,485.14

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Solution

The fourth proportional to 208,379.73, 310,739.39 and 206,485.14 is: 307,914.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,379.73 : 310,739.39 = 206,485.14 : x
  2. Step 2: Convert to fraction form
    208,379.73/310,739.39 = 206,485.14/x
  3. Step 3: Cross multiply
    208,379.73x = 310,739.39 × 206,485.14
  4. Step 4: Simplify right side
    208,379.73x = 64,163,066,963.88
  5. Step 5: Solve for x
    x = 64,163,066,963.88/208,379.73
  6. Step 6: Final answer
    x = 307,914.15

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.