Home / 280,252,534.20-420,378,801.30-188,419,529.40

Finding the Fourth Proportional to 280,252,534.20, 420,378,801.30 and 188,419,529.40

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Solution

The fourth proportional to 280,252,534.20, 420,378,801.30 and 188,419,529.40 is: 282,629,294.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,252,534.20 : 420,378,801.30 = 188,419,529.40 : x
  2. Step 2: Convert to fraction form
    280,252,534.20/420,378,801.30 = 188,419,529.40/x
  3. Step 3: Cross multiply
    280,252,534.20x = 420,378,801.30 × 188,419,529.40
  4. Step 4: Simplify right side
    280,252,534.20x = 79,207,575,910,682,112
  5. Step 5: Solve for x
    x = 79,207,575,910,682,112/280,252,534.20
  6. Step 6: Final answer
    x = 282,629,294.10

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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.