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Finding the Fourth Proportional to 209,377.74, 288,947.73 and 118,737.42

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Solution

The fourth proportional to 209,377.74, 288,947.73 and 118,737.42 is: 163,861.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,377.74 : 288,947.73 = 118,737.42 : x
  2. Step 2: Convert to fraction form
    209,377.74/288,947.73 = 118,737.42/x
  3. Step 3: Cross multiply
    209,377.74x = 288,947.73 × 118,737.42
  4. Step 4: Simplify right side
    209,377.74x = 34,308,907,975.06
  5. Step 5: Solve for x
    x = 34,308,907,975.06/209,377.74
  6. Step 6: Final answer
    x = 163,861.30

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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.