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Finding the Fourth Proportional to 422,975.20, 634,608.60 and 186,487.60

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Solution

The fourth proportional to 422,975.20, 634,608.60 and 186,487.60 is: 279,795.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,975.20 : 634,608.60 = 186,487.60 : x
  2. Step 2: Convert to fraction form
    422,975.20/634,608.60 = 186,487.60/x
  3. Step 3: Cross multiply
    422,975.20x = 634,608.60 × 186,487.60
  4. Step 4: Simplify right side
    422,975.20x = 118,346,634,753.36
  5. Step 5: Solve for x
    x = 118,346,634,753.36/422,975.20
  6. Step 6: Final answer
    x = 279,795.68

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1.5x scale

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.