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Finding the Fourth Proportional to 281,905.44, 389,040.74 and 154,585.60

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Solution

The fourth proportional to 281,905.44, 389,040.74 and 154,585.60 is: 213,334.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,905.44 : 389,040.74 = 154,585.60 : x
  2. Step 2: Convert to fraction form
    281,905.44/389,040.74 = 154,585.60/x
  3. Step 3: Cross multiply
    281,905.44x = 389,040.74 × 154,585.60
  4. Step 4: Simplify right side
    281,905.44x = 60,140,096,217.34
  5. Step 5: Solve for x
    x = 60,140,096,217.34/281,905.44
  6. Step 6: Final answer
    x = 213,334.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.