Home / 218,830.39-302,072.90-188,081.78

Finding the Fourth Proportional to 218,830.39, 302,072.90 and 188,081.78

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Solution

The fourth proportional to 218,830.39, 302,072.90 and 188,081.78 is: 259,627.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,830.39 : 302,072.90 = 188,081.78 : x
  2. Step 2: Convert to fraction form
    218,830.39/302,072.90 = 188,081.78/x
  3. Step 3: Cross multiply
    218,830.39x = 302,072.90 × 188,081.78
  4. Step 4: Simplify right side
    218,830.39x = 56,814,406,270.99
  5. Step 5: Solve for x
    x = 56,814,406,270.99/218,830.39
  6. Step 6: Final answer
    x = 259,627.59

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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.