Home / 285,814.12-394,422.06-158,511.28

Finding the Fourth Proportional to 285,814.12, 394,422.06 and 158,511.28

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Solution

The fourth proportional to 285,814.12, 394,422.06 and 158,511.28 is: 218,744.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,814.12 : 394,422.06 = 158,511.28 : x
  2. Step 2: Convert to fraction form
    285,814.12/394,422.06 = 158,511.28/x
  3. Step 3: Cross multiply
    285,814.12x = 394,422.06 × 158,511.28
  4. Step 4: Simplify right side
    285,814.12x = 62,520,345,590.84
  5. Step 5: Solve for x
    x = 62,520,345,590.84/285,814.12
  6. Step 6: Final answer
    x = 218,744.78

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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.