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Finding the Fourth Proportional to 209,620, 289,280.73 and 114,131.89

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Solution

The fourth proportional to 209,620, 289,280.73 and 114,131.89 is: 157,504.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,620 : 289,280.73 = 114,131.89 : x
  2. Step 2: Convert to fraction form
    209,620/289,280.73 = 114,131.89/x
  3. Step 3: Cross multiply
    209,620x = 289,280.73 × 114,131.89
  4. Step 4: Simplify right side
    209,620x = 33,016,156,455.48
  5. Step 5: Solve for x
    x = 33,016,156,455.48/209,620
  6. Step 6: Final answer
    x = 157,504.80

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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.