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Finding the Fourth Proportional to 285,147.60, 427,591.80 and 127,294.80

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Solution

The fourth proportional to 285,147.60, 427,591.80 and 127,294.80 is: 190,884.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,147.60 : 427,591.80 = 127,294.80 : x
  2. Step 2: Convert to fraction form
    285,147.60/427,591.80 = 127,294.80/x
  3. Step 3: Cross multiply
    285,147.60x = 427,591.80 × 127,294.80
  4. Step 4: Simplify right side
    285,147.60x = 54,430,212,662.64
  5. Step 5: Solve for x
    x = 54,430,212,662.64/285,147.60
  6. Step 6: Final answer
    x = 190,884.34

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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.