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Finding the Fourth Proportional to 154,428.80, 231,621.60 and 49,258.40

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Solution

The fourth proportional to 154,428.80, 231,621.60 and 49,258.40 is: 73,880.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,428.80 : 231,621.60 = 49,258.40 : x
  2. Step 2: Convert to fraction form
    154,428.80/231,621.60 = 49,258.40/x
  3. Step 3: Cross multiply
    154,428.80x = 231,621.60 × 49,258.40
  4. Step 4: Simplify right side
    154,428.80x = 11,409,309,421.44
  5. Step 5: Solve for x
    x = 11,409,309,421.44/154,428.80
  6. Step 6: Final answer
    x = 73,880.71

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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.