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Finding the Fourth Proportional to 218,783.60, 328,175.40 and 204,021.35

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Solution

The fourth proportional to 218,783.60, 328,175.40 and 204,021.35 is: 306,032.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,783.60 : 328,175.40 = 204,021.35 : x
  2. Step 2: Convert to fraction form
    218,783.60/328,175.40 = 204,021.35/x
  3. Step 3: Cross multiply
    218,783.60x = 328,175.40 × 204,021.35
  4. Step 4: Simplify right side
    218,783.60x = 66,954,788,144.79
  5. Step 5: Solve for x
    x = 66,954,788,144.79/218,783.60
  6. Step 6: Final answer
    x = 306,032.03

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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.