Home / 285,917.45-428,334.80-190,860.98

Finding the Fourth Proportional to 285,917.45, 428,334.80 and 190,860.98

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Solution

The fourth proportional to 285,917.45, 428,334.80 and 190,860.98 is: 285,930.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,917.45 : 428,334.80 = 190,860.98 : x
  2. Step 2: Convert to fraction form
    285,917.45/428,334.80 = 190,860.98/x
  3. Step 3: Cross multiply
    285,917.45x = 428,334.80 × 190,860.98
  4. Step 4: Simplify right side
    285,917.45x = 81,752,398,031.58
  5. Step 5: Solve for x
    x = 81,752,398,031.58/285,917.45
  6. Step 6: Final answer
    x = 285,930.08

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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.