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Finding the Fourth Proportional to 198,715.32, 298,072.98 and 115,551

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Solution

The fourth proportional to 198,715.32, 298,072.98 and 115,551 is: 173,326.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,715.32 : 298,072.98 = 115,551 : x
  2. Step 2: Convert to fraction form
    198,715.32/298,072.98 = 115,551/x
  3. Step 3: Cross multiply
    198,715.32x = 298,072.98 × 115,551
  4. Step 4: Simplify right side
    198,715.32x = 34,442,630,911.98
  5. Step 5: Solve for x
    x = 34,442,630,911.98/198,715.32
  6. Step 6: Final answer
    x = 173,326.50

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1.5x scale

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.