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Finding the Fourth Proportional to 208,791.27, 288,056.64 and 118,146.27

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Solution

The fourth proportional to 208,791.27, 288,056.64 and 118,146.27 is: 162,999.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,791.27 : 288,056.64 = 118,146.27 : x
  2. Step 2: Convert to fraction form
    208,791.27/288,056.64 = 118,146.27/x
  3. Step 3: Cross multiply
    208,791.27x = 288,056.64 × 118,146.27
  4. Step 4: Simplify right side
    208,791.27x = 34,032,817,564.73
  5. Step 5: Solve for x
    x = 34,032,817,564.73/208,791.27
  6. Step 6: Final answer
    x = 162,999.24

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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.