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Finding the Fourth Proportional to 218,106.60, 305,556.60 and 218,106.60

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Solution

The fourth proportional to 218,106.60, 305,556.60 and 218,106.60 is: 305,556.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,106.60 : 305,556.60 = 218,106.60 : x
  2. Step 2: Convert to fraction form
    218,106.60/305,556.60 = 218,106.60/x
  3. Step 3: Cross multiply
    218,106.60x = 305,556.60 × 218,106.60
  4. Step 4: Simplify right side
    218,106.60x = 66,643,911,133.56
  5. Step 5: Solve for x
    x = 66,643,911,133.56/218,106.60
  6. Step 6: Final answer
    x = 305,556.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.