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Finding the Fourth Proportional to 209,908.80, 314,960.40 and 110,181.60

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Solution

The fourth proportional to 209,908.80, 314,960.40 and 110,181.60 is: 165,323.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,908.80 : 314,960.40 = 110,181.60 : x
  2. Step 2: Convert to fraction form
    209,908.80/314,960.40 = 110,181.60/x
  3. Step 3: Cross multiply
    209,908.80x = 314,960.40 × 110,181.60
  4. Step 4: Simplify right side
    209,908.80x = 34,702,840,808.64
  5. Step 5: Solve for x
    x = 34,702,840,808.64/209,908.80
  6. Step 6: Final answer
    x = 165,323.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.