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Finding the Fourth Proportional to 298,628.40, 447,942.60 and 141,164.40

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Solution

The fourth proportional to 298,628.40, 447,942.60 and 141,164.40 is: 211,746.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,628.40 : 447,942.60 = 141,164.40 : x
  2. Step 2: Convert to fraction form
    298,628.40/447,942.60 = 141,164.40/x
  3. Step 3: Cross multiply
    298,628.40x = 447,942.60 × 141,164.40
  4. Step 4: Simplify right side
    298,628.40x = 63,233,548,363.44
  5. Step 5: Solve for x
    x = 63,233,548,363.44/298,628.40
  6. Step 6: Final answer
    x = 211,746.60

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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.