Home / 355,930.96-491,108.77-210,782.35

Finding the Fourth Proportional to 355,930.96, 491,108.77 and 210,782.35

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Solution

The fourth proportional to 355,930.96, 491,108.77 and 210,782.35 is: 290,834.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,930.96 : 491,108.77 = 210,782.35 : x
  2. Step 2: Convert to fraction form
    355,930.96/491,108.77 = 210,782.35/x
  3. Step 3: Cross multiply
    355,930.96x = 491,108.77 × 210,782.35
  4. Step 4: Simplify right side
    355,930.96x = 103,517,061,523.57
  5. Step 5: Solve for x
    x = 103,517,061,523.57/355,930.96
  6. Step 6: Final answer
    x = 290,834.67

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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.