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Finding the Fourth Proportional to 279,226.86, 418,701.92 and 99,285.30

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Solution

The fourth proportional to 279,226.86, 418,701.92 and 99,285.30 is: 148,878.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,226.86 : 418,701.92 = 99,285.30 : x
  2. Step 2: Convert to fraction form
    279,226.86/418,701.92 = 99,285.30/x
  3. Step 3: Cross multiply
    279,226.86x = 418,701.92 × 99,285.30
  4. Step 4: Simplify right side
    279,226.86x = 41,570,945,241.35
  5. Step 5: Solve for x
    x = 41,570,945,241.35/279,226.86
  6. Step 6: Final answer
    x = 148,878.75

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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.