Home / 218,936.70-328,145.85-163,467.90

Finding the Fourth Proportional to 218,936.70, 328,145.85 and 163,467.90

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Solution

The fourth proportional to 218,936.70, 328,145.85 and 163,467.90 is: 245,008.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,936.70 : 328,145.85 = 163,467.90 : x
  2. Step 2: Convert to fraction form
    218,936.70/328,145.85 = 163,467.90/x
  3. Step 3: Cross multiply
    218,936.70x = 328,145.85 × 163,467.90
  4. Step 4: Simplify right side
    218,936.70x = 53,641,312,993.22
  5. Step 5: Solve for x
    x = 53,641,312,993.22/218,936.70
  6. Step 6: Final answer
    x = 245,008.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.