Home / 218,815.82-328,279.08-61,044.15

Finding the Fourth Proportional to 218,815.82, 328,279.08 and 61,044.15

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Solution

The fourth proportional to 218,815.82, 328,279.08 and 61,044.15 is: 91,581.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,815.82 : 328,279.08 = 61,044.15 : x
  2. Step 2: Convert to fraction form
    218,815.82/328,279.08 = 61,044.15/x
  3. Step 3: Cross multiply
    218,815.82x = 328,279.08 × 61,044.15
  4. Step 4: Simplify right side
    218,815.82x = 20,039,517,401.38
  5. Step 5: Solve for x
    x = 20,039,517,401.38/218,815.82
  6. Step 6: Final answer
    x = 91,581.67

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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.