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Finding the Fourth Proportional to 275,507.28, 379,850.76 and 211,052.88

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Solution

The fourth proportional to 275,507.28, 379,850.76 and 211,052.88 is: 290,985.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,507.28 : 379,850.76 = 211,052.88 : x
  2. Step 2: Convert to fraction form
    275,507.28/379,850.76 = 211,052.88/x
  3. Step 3: Cross multiply
    275,507.28x = 379,850.76 × 211,052.88
  4. Step 4: Simplify right side
    275,507.28x = 80,168,596,868.19
  5. Step 5: Solve for x
    x = 80,168,596,868.19/275,507.28
  6. Step 6: Final answer
    x = 290,985.40

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.