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Finding the Fourth Proportional to 209,387.52, 289,006.11 and 118,796.52

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Solution

The fourth proportional to 209,387.52, 289,006.11 and 118,796.52 is: 163,968.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,387.52 : 289,006.11 = 118,796.52 : x
  2. Step 2: Convert to fraction form
    209,387.52/289,006.11 = 118,796.52/x
  3. Step 3: Cross multiply
    209,387.52x = 289,006.11 × 118,796.52
  4. Step 4: Simplify right side
    209,387.52x = 34,332,918,597.48
  5. Step 5: Solve for x
    x = 34,332,918,597.48/209,387.52
  6. Step 6: Final answer
    x = 163,968.31

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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.