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Finding the Fourth Proportional to 198,667.80, 298,001.70 and 197,285.40

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Solution

The fourth proportional to 198,667.80, 298,001.70 and 197,285.40 is: 295,928.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,667.80 : 298,001.70 = 197,285.40 : x
  2. Step 2: Convert to fraction form
    198,667.80/298,001.70 = 197,285.40/x
  3. Step 3: Cross multiply
    198,667.80x = 298,001.70 × 197,285.40
  4. Step 4: Simplify right side
    198,667.80x = 58,791,384,585.18
  5. Step 5: Solve for x
    x = 58,791,384,585.18/198,667.80
  6. Step 6: Final answer
    x = 295,928.10

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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.