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Finding the Fourth Proportional to 279,848.70, 419,773.05 and 92,860.20

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Solution

The fourth proportional to 279,848.70, 419,773.05 and 92,860.20 is: 139,290.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,848.70 : 419,773.05 = 92,860.20 : x
  2. Step 2: Convert to fraction form
    279,848.70/419,773.05 = 92,860.20/x
  3. Step 3: Cross multiply
    279,848.70x = 419,773.05 × 92,860.20
  4. Step 4: Simplify right side
    279,848.70x = 38,980,209,377.61
  5. Step 5: Solve for x
    x = 38,980,209,377.61/279,848.70
  6. Step 6: Final answer
    x = 139,290.30

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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.