Home / 260,533.20-390,761.40-73,563.60

Finding the Fourth Proportional to 260,533.20, 390,761.40 and 73,563.60

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Solution

The fourth proportional to 260,533.20, 390,761.40 and 73,563.60 is: 110,334.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,533.20 : 390,761.40 = 73,563.60 : x
  2. Step 2: Convert to fraction form
    260,533.20/390,761.40 = 73,563.60/x
  3. Step 3: Cross multiply
    260,533.20x = 390,761.40 × 73,563.60
  4. Step 4: Simplify right side
    260,533.20x = 28,745,815,325.04
  5. Step 5: Solve for x
    x = 28,745,815,325.04/260,533.20
  6. Step 6: Final answer
    x = 110,334.56

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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.