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Finding the Fourth Proportional to 279,114.40, 418,671.60 and 264,680.20

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Solution

The fourth proportional to 279,114.40, 418,671.60 and 264,680.20 is: 397,020.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,114.40 : 418,671.60 = 264,680.20 : x
  2. Step 2: Convert to fraction form
    279,114.40/418,671.60 = 264,680.20/x
  3. Step 3: Cross multiply
    279,114.40x = 418,671.60 × 264,680.20
  4. Step 4: Simplify right side
    279,114.40x = 110,814,082,822.32
  5. Step 5: Solve for x
    x = 110,814,082,822.32/279,114.40
  6. Step 6: Final answer
    x = 397,020.30

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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.