Home / 260,004.40-390,043.51-80,104.43

Finding the Fourth Proportional to 260,004.40, 390,043.51 and 80,104.43

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Solution

The fourth proportional to 260,004.40, 390,043.51 and 80,104.43 is: 120,168.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,004.40 : 390,043.51 = 80,104.43 : x
  2. Step 2: Convert to fraction form
    260,004.40/390,043.51 = 80,104.43/x
  3. Step 3: Cross multiply
    260,004.40x = 390,043.51 × 80,104.43
  4. Step 4: Simplify right side
    260,004.40x = 31,244,211,838.85
  5. Step 5: Solve for x
    x = 31,244,211,838.85/260,004.40
  6. Step 6: Final answer
    x = 120,168.01

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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.