Home / 286,991.22-396,047.88-159,666.78

Finding the Fourth Proportional to 286,991.22, 396,047.88 and 159,666.78

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Solution

The fourth proportional to 286,991.22, 396,047.88 and 159,666.78 is: 220,340.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,991.22 : 396,047.88 = 159,666.78 : x
  2. Step 2: Convert to fraction form
    286,991.22/396,047.88 = 159,666.78/x
  3. Step 3: Cross multiply
    286,991.22x = 396,047.88 × 159,666.78
  4. Step 4: Simplify right side
    286,991.22x = 63,235,689,725.43
  5. Step 5: Solve for x
    x = 63,235,689,725.43/286,991.22
  6. Step 6: Final answer
    x = 220,340.15

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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.