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Finding the Fourth Proportional to 298,383.20, 447,445.20 and 98,626.40

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Solution

The fourth proportional to 298,383.20, 447,445.20 and 98,626.40 is: 147,896.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,383.20 : 447,445.20 = 98,626.40 : x
  2. Step 2: Convert to fraction form
    298,383.20/447,445.20 = 98,626.40/x
  3. Step 3: Cross multiply
    298,383.20x = 447,445.20 × 98,626.40
  4. Step 4: Simplify right side
    298,383.20x = 44,129,909,273.28
  5. Step 5: Solve for x
    x = 44,129,909,273.28/298,383.20
  6. Step 6: Final answer
    x = 147,896.76

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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.