Home / 260,620.20-390,930.30-73,631.70

Finding the Fourth Proportional to 260,620.20, 390,930.30 and 73,631.70

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Solution

The fourth proportional to 260,620.20, 390,930.30 and 73,631.70 is: 110,447.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,620.20 : 390,930.30 = 73,631.70 : x
  2. Step 2: Convert to fraction form
    260,620.20/390,930.30 = 73,631.70/x
  3. Step 3: Cross multiply
    260,620.20x = 390,930.30 × 73,631.70
  4. Step 4: Simplify right side
    260,620.20x = 28,784,862,570.51
  5. Step 5: Solve for x
    x = 28,784,862,570.51/260,620.20
  6. Step 6: Final answer
    x = 110,447.55

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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.