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Finding the Fourth Proportional to 298,912.78, 448,271.61 and 99,179.54

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Solution

The fourth proportional to 298,912.78, 448,271.61 and 99,179.54 is: 148,736.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,912.78 : 448,271.61 = 99,179.54 : x
  2. Step 2: Convert to fraction form
    298,912.78/448,271.61 = 99,179.54/x
  3. Step 3: Cross multiply
    298,912.78x = 448,271.61 × 99,179.54
  4. Step 4: Simplify right side
    298,912.78x = 44,459,369,833.50
  5. Step 5: Solve for x
    x = 44,459,369,833.50/298,912.78
  6. Step 6: Final answer
    x = 148,736.93

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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.