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Finding the Fourth Proportional to 324,292.14, 486,449.15 and 87,636.87

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Solution

The fourth proportional to 324,292.14, 486,449.15 and 87,636.87 is: 131,458.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,292.14 : 486,449.15 = 87,636.87 : x
  2. Step 2: Convert to fraction form
    324,292.14/486,449.15 = 87,636.87/x
  3. Step 3: Cross multiply
    324,292.14x = 486,449.15 × 87,636.87
  4. Step 4: Simplify right side
    324,292.14x = 42,630,880,481.98
  5. Step 5: Solve for x
    x = 42,630,880,481.98/324,292.14
  6. Step 6: Final answer
    x = 131,458.26

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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.