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Finding the Fourth Proportional to 285,286.80, 427,768.20 and 107,799.60

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Solution

The fourth proportional to 285,286.80, 427,768.20 and 107,799.60 is: 161,638.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,286.80 : 427,768.20 = 107,799.60 : x
  2. Step 2: Convert to fraction form
    285,286.80/427,768.20 = 107,799.60/x
  3. Step 3: Cross multiply
    285,286.80x = 427,768.20 × 107,799.60
  4. Step 4: Simplify right side
    285,286.80x = 46,113,240,852.72
  5. Step 5: Solve for x
    x = 46,113,240,852.72/285,286.80
  6. Step 6: Final answer
    x = 161,638.19

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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.