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Finding the Fourth Proportional to 363,979.60, 545,969.40 and 186,427.60

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Solution

The fourth proportional to 363,979.60, 545,969.40 and 186,427.60 is: 279,641.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,979.60 : 545,969.40 = 186,427.60 : x
  2. Step 2: Convert to fraction form
    363,979.60/545,969.40 = 186,427.60/x
  3. Step 3: Cross multiply
    363,979.60x = 545,969.40 × 186,427.60
  4. Step 4: Simplify right side
    363,979.60x = 101,783,764,915.44
  5. Step 5: Solve for x
    x = 101,783,764,915.44/363,979.60
  6. Step 6: Final answer
    x = 279,641.40

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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.