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Finding the Fourth Proportional to 298,388.65, 447,583.12 and 98,709.04

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Solution

The fourth proportional to 298,388.65, 447,583.12 and 98,709.04 is: 148,063.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,388.65 : 447,583.12 = 98,709.04 : x
  2. Step 2: Convert to fraction form
    298,388.65/447,583.12 = 98,709.04/x
  3. Step 3: Cross multiply
    298,388.65x = 447,583.12 × 98,709.04
  4. Step 4: Simplify right side
    298,388.65x = 44,180,497,857.49
  5. Step 5: Solve for x
    x = 44,180,497,857.49/298,388.65
  6. Step 6: Final answer
    x = 148,063.60

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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.