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Finding the Fourth Proportional to 198,666.40, 297,999.60 and 189,450.40

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Solution

The fourth proportional to 198,666.40, 297,999.60 and 189,450.40 is: 284,175.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,666.40 : 297,999.60 = 189,450.40 : x
  2. Step 2: Convert to fraction form
    198,666.40/297,999.60 = 189,450.40/x
  3. Step 3: Cross multiply
    198,666.40x = 297,999.60 × 189,450.40
  4. Step 4: Simplify right side
    198,666.40x = 56,456,143,419.84
  5. Step 5: Solve for x
    x = 56,456,143,419.84/198,666.40
  6. Step 6: Final answer
    x = 284,175.60

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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.