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Finding the Fourth Proportional to 260,079.20, 389,535.60 and 260,079.20

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Solution

The fourth proportional to 260,079.20, 389,535.60 and 260,079.20 is: 389,535.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,079.20 : 389,535.60 = 260,079.20 : x
  2. Step 2: Convert to fraction form
    260,079.20/389,535.60 = 260,079.20/x
  3. Step 3: Cross multiply
    260,079.20x = 389,535.60 × 260,079.20
  4. Step 4: Simplify right side
    260,079.20x = 101,310,107,219.52
  5. Step 5: Solve for x
    x = 101,310,107,219.52/260,079.20
  6. Step 6: Final answer
    x = 389,535.60

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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.