Home / 218,938.75-302,143.97-123,443.39

Finding the Fourth Proportional to 218,938.75, 302,143.97 and 123,443.39

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Solution

The fourth proportional to 218,938.75, 302,143.97 and 123,443.39 is: 170,356.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,938.75 : 302,143.97 = 123,443.39 : x
  2. Step 2: Convert to fraction form
    218,938.75/302,143.97 = 123,443.39/x
  3. Step 3: Cross multiply
    218,938.75x = 302,143.97 × 123,443.39
  4. Step 4: Simplify right side
    218,938.75x = 37,297,676,988.83
  5. Step 5: Solve for x
    x = 37,297,676,988.83/218,938.75
  6. Step 6: Final answer
    x = 170,356.67

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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.