Home / 286,126.80-394,847.28-157,065.36

Finding the Fourth Proportional to 286,126.80, 394,847.28 and 157,065.36

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Solution

The fourth proportional to 286,126.80, 394,847.28 and 157,065.36 is: 216,745.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,126.80 : 394,847.28 = 157,065.36 : x
  2. Step 2: Convert to fraction form
    286,126.80/394,847.28 = 157,065.36/x
  3. Step 3: Cross multiply
    286,126.80x = 394,847.28 × 157,065.36
  4. Step 4: Simplify right side
    286,126.80x = 62,016,830,178.22
  5. Step 5: Solve for x
    x = 62,016,830,178.22/286,126.80
  6. Step 6: Final answer
    x = 216,745.97

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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.