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Finding the Fourth Proportional to 326,709.37, 490,189.70 and 158,216.74

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Solution

The fourth proportional to 326,709.37, 490,189.70 and 158,216.74 is: 237,385.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,709.37 : 490,189.70 = 158,216.74 : x
  2. Step 2: Convert to fraction form
    326,709.37/490,189.70 = 158,216.74/x
  3. Step 3: Cross multiply
    326,709.37x = 490,189.70 × 158,216.74
  4. Step 4: Simplify right side
    326,709.37x = 77,556,217,797.98
  5. Step 5: Solve for x
    x = 77,556,217,797.98/326,709.37
  6. Step 6: Final answer
    x = 237,385.96

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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.