Home / 286,971.98-396,021.03-159,644.84

Finding the Fourth Proportional to 286,971.98, 396,021.03 and 159,644.84

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Solution

The fourth proportional to 286,971.98, 396,021.03 and 159,644.84 is: 220,309.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,971.98 : 396,021.03 = 159,644.84 : x
  2. Step 2: Convert to fraction form
    286,971.98/396,021.03 = 159,644.84/x
  3. Step 3: Cross multiply
    286,971.98x = 396,021.03 × 159,644.84
  4. Step 4: Simplify right side
    286,971.98x = 63,222,713,970.99
  5. Step 5: Solve for x
    x = 63,222,713,970.99/286,971.98
  6. Step 6: Final answer
    x = 220,309.71

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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.