Home / 282,189.88-389,429.22-154,864.36

Finding the Fourth Proportional to 282,189.88, 389,429.22 and 154,864.36

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Solution

The fourth proportional to 282,189.88, 389,429.22 and 154,864.36 is: 213,716.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,189.88 : 389,429.22 = 154,864.36 : x
  2. Step 2: Convert to fraction form
    282,189.88/389,429.22 = 154,864.36/x
  3. Step 3: Cross multiply
    282,189.88x = 389,429.22 × 154,864.36
  4. Step 4: Simplify right side
    282,189.88x = 60,308,706,920.60
  5. Step 5: Solve for x
    x = 60,308,706,920.60/282,189.88
  6. Step 6: Final answer
    x = 213,716.76

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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.