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Finding the Fourth Proportional to 298,154.56, 447,439.20 and 192,712

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Solution

The fourth proportional to 298,154.56, 447,439.20 and 192,712 is: 289,202.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,154.56 : 447,439.20 = 192,712 : x
  2. Step 2: Convert to fraction form
    298,154.56/447,439.20 = 192,712/x
  3. Step 3: Cross multiply
    298,154.56x = 447,439.20 × 192,712
  4. Step 4: Simplify right side
    298,154.56x = 86,226,903,110.40
  5. Step 5: Solve for x
    x = 86,226,903,110.40/298,154.56
  6. Step 6: Final answer
    x = 289,202.03

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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.