Home / 282,215.36-389,456.86-154,891.28

Finding the Fourth Proportional to 282,215.36, 389,456.86 and 154,891.28

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Solution

The fourth proportional to 282,215.36, 389,456.86 and 154,891.28 is: 213,749.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,215.36 : 389,456.86 = 154,891.28 : x
  2. Step 2: Convert to fraction form
    282,215.36/389,456.86 = 154,891.28/x
  3. Step 3: Cross multiply
    282,215.36x = 389,456.86 × 154,891.28
  4. Step 4: Simplify right side
    282,215.36x = 60,323,471,550.18
  5. Step 5: Solve for x
    x = 60,323,471,550.18/282,215.36
  6. Step 6: Final answer
    x = 213,749.78

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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.