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Finding the Fourth Proportional to 298,571.46, 447,528.60 and 129,895.44

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Solution

The fourth proportional to 298,571.46, 447,528.60 and 129,895.44 is: 194,700.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,571.46 : 447,528.60 = 129,895.44 : x
  2. Step 2: Convert to fraction form
    298,571.46/447,528.60 = 129,895.44/x
  3. Step 3: Cross multiply
    298,571.46x = 447,528.60 × 129,895.44
  4. Step 4: Simplify right side
    298,571.46x = 58,131,924,409.58
  5. Step 5: Solve for x
    x = 58,131,924,409.58/298,571.46
  6. Step 6: Final answer
    x = 194,700.20

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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.