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Finding the Fourth Proportional to 199,363.80, 298,630.32 and 99,220.32

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Solution

The fourth proportional to 199,363.80, 298,630.32 and 99,220.32 is: 148,623.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,363.80 : 298,630.32 = 99,220.32 : x
  2. Step 2: Convert to fraction form
    199,363.80/298,630.32 = 99,220.32/x
  3. Step 3: Cross multiply
    199,363.80x = 298,630.32 × 99,220.32
  4. Step 4: Simplify right side
    199,363.80x = 29,630,195,912.10
  5. Step 5: Solve for x
    x = 29,630,195,912.10/199,363.80
  6. Step 6: Final answer
    x = 148,623.75

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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.