Home / 218,975.30-328,511.55-100,618.10

Finding the Fourth Proportional to 218,975.30, 328,511.55 and 100,618.10

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Solution

The fourth proportional to 218,975.30, 328,511.55 and 100,618.10 is: 150,949.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,975.30 : 328,511.55 = 100,618.10 : x
  2. Step 2: Convert to fraction form
    218,975.30/328,511.55 = 100,618.10/x
  3. Step 3: Cross multiply
    218,975.30x = 328,511.55 × 100,618.10
  4. Step 4: Simplify right side
    218,975.30x = 33,054,207,989.06
  5. Step 5: Solve for x
    x = 33,054,207,989.06/218,975.30
  6. Step 6: Final answer
    x = 150,949.48

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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.