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Finding the Fourth Proportional to 279,374.90, 419,062.35 and 254,443.10

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Solution

The fourth proportional to 279,374.90, 419,062.35 and 254,443.10 is: 381,664.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,374.90 : 419,062.35 = 254,443.10 : x
  2. Step 2: Convert to fraction form
    279,374.90/419,062.35 = 254,443.10/x
  3. Step 3: Cross multiply
    279,374.90x = 419,062.35 × 254,443.10
  4. Step 4: Simplify right side
    279,374.90x = 106,627,523,427.29
  5. Step 5: Solve for x
    x = 106,627,523,427.29/279,374.90
  6. Step 6: Final answer
    x = 381,664.65

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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.