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Finding the Fourth Proportional to 297,318.40, 445,977.60 and 197,612.80

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Solution

The fourth proportional to 297,318.40, 445,977.60 and 197,612.80 is: 296,419.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,318.40 : 445,977.60 = 197,612.80 : x
  2. Step 2: Convert to fraction form
    297,318.40/445,977.60 = 197,612.80/x
  3. Step 3: Cross multiply
    297,318.40x = 445,977.60 × 197,612.80
  4. Step 4: Simplify right side
    297,318.40x = 88,130,882,273.28
  5. Step 5: Solve for x
    x = 88,130,882,273.28/297,318.40
  6. Step 6: Final answer
    x = 296,419.20

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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.