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Finding the Fourth Proportional to 299,439.60, 449,159.40 and 141,975.60

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Solution

The fourth proportional to 299,439.60, 449,159.40 and 141,975.60 is: 212,963.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,439.60 : 449,159.40 = 141,975.60 : x
  2. Step 2: Convert to fraction form
    299,439.60/449,159.40 = 141,975.60/x
  3. Step 3: Cross multiply
    299,439.60x = 449,159.40 × 141,975.60
  4. Step 4: Simplify right side
    299,439.60x = 63,769,675,310.64
  5. Step 5: Solve for x
    x = 63,769,675,310.64/299,439.60
  6. Step 6: Final answer
    x = 212,963.40

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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.