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Finding the Fourth Proportional to 343,653.22, 515,311.18 and 141,212.65

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Solution

The fourth proportional to 343,653.22, 515,311.18 and 141,212.65 is: 211,749.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,653.22 : 515,311.18 = 141,212.65 : x
  2. Step 2: Convert to fraction form
    343,653.22/515,311.18 = 141,212.65/x
  3. Step 3: Cross multiply
    343,653.22x = 515,311.18 × 141,212.65
  4. Step 4: Simplify right side
    343,653.22x = 72,768,457,302.43
  5. Step 5: Solve for x
    x = 72,768,457,302.43/343,653.22
  6. Step 6: Final answer
    x = 211,749.67

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1.5x scale

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.