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Finding the Fourth Proportional to 198,701.10, 298,051.65 and 195,420.60

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Solution

The fourth proportional to 198,701.10, 298,051.65 and 195,420.60 is: 293,130.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,701.10 : 298,051.65 = 195,420.60 : x
  2. Step 2: Convert to fraction form
    198,701.10/298,051.65 = 195,420.60/x
  3. Step 3: Cross multiply
    198,701.10x = 298,051.65 × 195,420.60
  4. Step 4: Simplify right side
    198,701.10x = 58,245,432,273.99
  5. Step 5: Solve for x
    x = 58,245,432,273.99/198,701.10
  6. Step 6: Final answer
    x = 293,130.90

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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.