Home / 280,491.20-387,092.36-171,561.39

Finding the Fourth Proportional to 280,491.20, 387,092.36 and 171,561.39

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Solution

The fourth proportional to 280,491.20, 387,092.36 and 171,561.39 is: 236,763.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,491.20 : 387,092.36 = 171,561.39 : x
  2. Step 2: Convert to fraction form
    280,491.20/387,092.36 = 171,561.39/x
  3. Step 3: Cross multiply
    280,491.20x = 387,092.36 × 171,561.39
  4. Step 4: Simplify right side
    280,491.20x = 66,410,103,339.98
  5. Step 5: Solve for x
    x = 66,410,103,339.98/280,491.20
  6. Step 6: Final answer
    x = 236,763.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.