Home / 286,919.40-395,943.40-196,272.30

Finding the Fourth Proportional to 286,919.40, 395,943.40 and 196,272.30

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Solution

The fourth proportional to 286,919.40, 395,943.40 and 196,272.30 is: 270,852.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,919.40 : 395,943.40 = 196,272.30 : x
  2. Step 2: Convert to fraction form
    286,919.40/395,943.40 = 196,272.30/x
  3. Step 3: Cross multiply
    286,919.40x = 395,943.40 × 196,272.30
  4. Step 4: Simplify right side
    286,919.40x = 77,712,721,787.82
  5. Step 5: Solve for x
    x = 77,712,721,787.82/286,919.40
  6. Step 6: Final answer
    x = 270,852.10

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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.