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Finding the Fourth Proportional to 260,081.20, 389,538.60 and 260,081.20

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Solution

The fourth proportional to 260,081.20, 389,538.60 and 260,081.20 is: 389,538.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,081.20 : 389,538.60 = 260,081.20 : x
  2. Step 2: Convert to fraction form
    260,081.20/389,538.60 = 260,081.20/x
  3. Step 3: Cross multiply
    260,081.20x = 389,538.60 × 260,081.20
  4. Step 4: Simplify right side
    260,081.20x = 101,311,666,534.32
  5. Step 5: Solve for x
    x = 101,311,666,534.32/260,081.20
  6. Step 6: Final answer
    x = 389,538.60

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1.5x scale

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.