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Finding the Fourth Proportional to 201,976.40, 302,964.60 and 83,608.40

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Solution

The fourth proportional to 201,976.40, 302,964.60 and 83,608.40 is: 125,412.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,976.40 : 302,964.60 = 83,608.40 : x
  2. Step 2: Convert to fraction form
    201,976.40/302,964.60 = 83,608.40/x
  3. Step 3: Cross multiply
    201,976.40x = 302,964.60 × 83,608.40
  4. Step 4: Simplify right side
    201,976.40x = 25,330,385,462.64
  5. Step 5: Solve for x
    x = 25,330,385,462.64/201,976.40
  6. Step 6: Final answer
    x = 125,412.60

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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.