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Finding the Fourth Proportional to 481,969.20, 722,824.20 and 201,428.40

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Solution

The fourth proportional to 481,969.20, 722,824.20 and 201,428.40 is: 302,088.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,969.20 : 722,824.20 = 201,428.40 : x
  2. Step 2: Convert to fraction form
    481,969.20/722,824.20 = 201,428.40/x
  3. Step 3: Cross multiply
    481,969.20x = 722,824.20 × 201,428.40
  4. Step 4: Simplify right side
    481,969.20x = 145,597,322,087.28
  5. Step 5: Solve for x
    x = 145,597,322,087.28/481,969.20
  6. Step 6: Final answer
    x = 302,088.44

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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.