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Finding the Fourth Proportional to 218,015.90, 305,922.10 and 218,015.90

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Solution

The fourth proportional to 218,015.90, 305,922.10 and 218,015.90 is: 305,922.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,015.90 : 305,922.10 = 218,015.90 : x
  2. Step 2: Convert to fraction form
    218,015.90/305,922.10 = 218,015.90/x
  3. Step 3: Cross multiply
    218,015.90x = 305,922.10 × 218,015.90
  4. Step 4: Simplify right side
    218,015.90x = 66,695,881,961.39
  5. Step 5: Solve for x
    x = 66,695,881,961.39/218,015.90
  6. Step 6: Final answer
    x = 305,922.10

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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.