Home / 419,931.90-579,481.05-238,618.67

Finding the Fourth Proportional to 419,931.90, 579,481.05 and 238,618.67

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Solution

The fourth proportional to 419,931.90, 579,481.05 and 238,618.67 is: 329,279.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,931.90 : 579,481.05 = 238,618.67 : x
  2. Step 2: Convert to fraction form
    419,931.90/579,481.05 = 238,618.67/x
  3. Step 3: Cross multiply
    419,931.90x = 579,481.05 × 238,618.67
  4. Step 4: Simplify right side
    419,931.90x = 138,274,995,438.62
  5. Step 5: Solve for x
    x = 138,274,995,438.62/419,931.90
  6. Step 6: Final answer
    x = 329,279.57

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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.