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Finding the Fourth Proportional to 279,137.01, 418,546.95 and 190,497.90

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Solution

The fourth proportional to 279,137.01, 418,546.95 and 190,497.90 is: 285,638.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,137.01 : 418,546.95 = 190,497.90 : x
  2. Step 2: Convert to fraction form
    279,137.01/418,546.95 = 190,497.90/x
  3. Step 3: Cross multiply
    279,137.01x = 418,546.95 × 190,497.90
  4. Step 4: Simplify right side
    279,137.01x = 79,732,315,026.41
  5. Step 5: Solve for x
    x = 79,732,315,026.41/279,137.01
  6. Step 6: Final answer
    x = 285,638.64

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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.