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Finding the Fourth Proportional to 209,368.20, 288,922.02 and 118,732.68

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Solution

The fourth proportional to 209,368.20, 288,922.02 and 118,732.68 is: 163,847.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,368.20 : 288,922.02 = 118,732.68 : x
  2. Step 2: Convert to fraction form
    209,368.20/288,922.02 = 118,732.68/x
  3. Step 3: Cross multiply
    209,368.20x = 288,922.02 × 118,732.68
  4. Step 4: Simplify right side
    209,368.20x = 34,304,485,745.61
  5. Step 5: Solve for x
    x = 34,304,485,745.61/209,368.20
  6. Step 6: Final answer
    x = 163,847.64

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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.