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Finding the Fourth Proportional to 299,969.60, 449,889.60 and 131,489.60

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Solution

The fourth proportional to 299,969.60, 449,889.60 and 131,489.60 is: 197,206.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,969.60 : 449,889.60 = 131,489.60 : x
  2. Step 2: Convert to fraction form
    299,969.60/449,889.60 = 131,489.60/x
  3. Step 3: Cross multiply
    299,969.60x = 449,889.60 × 131,489.60
  4. Step 4: Simplify right side
    299,969.60x = 59,155,803,548.16
  5. Step 5: Solve for x
    x = 59,155,803,548.16/299,969.60
  6. Step 6: Final answer
    x = 197,206.00

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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.