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Finding the Fourth Proportional to 260,586, 390,880.62 and 73,599.12

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Solution

The fourth proportional to 260,586, 390,880.62 and 73,599.12 is: 110,399.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,586 : 390,880.62 = 73,599.12 : x
  2. Step 2: Convert to fraction form
    260,586/390,880.62 = 73,599.12/x
  3. Step 3: Cross multiply
    260,586x = 390,880.62 × 73,599.12
  4. Step 4: Simplify right side
    260,586x = 28,768,469,657.05
  5. Step 5: Solve for x
    x = 28,768,469,657.05/260,586
  6. Step 6: Final answer
    x = 110,399.14

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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.