Home / 280,651,636.20-420,339,725.10-177,339,505.80

Finding the Fourth Proportional to 280,651,636.20, 420,339,725.10 and 177,339,505.80

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Solution

The fourth proportional to 280,651,636.20, 420,339,725.10 and 177,339,505.80 is: 265,606,287.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,651,636.20 : 420,339,725.10 = 177,339,505.80 : x
  2. Step 2: Convert to fraction form
    280,651,636.20/420,339,725.10 = 177,339,505.80/x
  3. Step 3: Cross multiply
    280,651,636.20x = 420,339,725.10 × 177,339,505.80
  4. Step 4: Simplify right side
    280,651,636.20x = 74,542,839,117,341,872
  5. Step 5: Solve for x
    x = 74,542,839,117,341,872/280,651,636.20
  6. Step 6: Final answer
    x = 265,606,287.31

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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.