Home / 260,139.12-389,940.84-102,303.60

Finding the Fourth Proportional to 260,139.12, 389,940.84 and 102,303.60

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Solution

The fourth proportional to 260,139.12, 389,940.84 and 102,303.60 is: 153,350.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,139.12 : 389,940.84 = 102,303.60 : x
  2. Step 2: Convert to fraction form
    260,139.12/389,940.84 = 102,303.60/x
  3. Step 3: Cross multiply
    260,139.12x = 389,940.84 × 102,303.60
  4. Step 4: Simplify right side
    260,139.12x = 39,892,351,719.02
  5. Step 5: Solve for x
    x = 39,892,351,719.02/260,139.12
  6. Step 6: Final answer
    x = 153,350.07

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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.