Home / 378,048,820.80-567,073,231.20-105,419,150.40

Finding the Fourth Proportional to 378,048,820.80, 567,073,231.20 and 105,419,150.40

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Solution

The fourth proportional to 378,048,820.80, 567,073,231.20 and 105,419,150.40 is: 158,128,725.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,048,820.80 : 567,073,231.20 = 105,419,150.40 : x
  2. Step 2: Convert to fraction form
    378,048,820.80/567,073,231.20 = 105,419,150.40/x
  3. Step 3: Cross multiply
    378,048,820.80x = 567,073,231.20 × 105,419,150.40
  4. Step 4: Simplify right side
    378,048,820.80x = 59,780,378,247,686,784
  5. Step 5: Solve for x
    x = 59,780,378,247,686,784/378,048,820.80
  6. Step 6: Final answer
    x = 158,128,725.60

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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.