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Finding the Fourth Proportional to 324,132.60, 486,486.90 and 190,846.20

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Solution

The fourth proportional to 324,132.60, 486,486.90 and 190,846.20 is: 286,438.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,132.60 : 486,486.90 = 190,846.20 : x
  2. Step 2: Convert to fraction form
    324,132.60/486,486.90 = 190,846.20/x
  3. Step 3: Cross multiply
    324,132.60x = 486,486.90 × 190,846.20
  4. Step 4: Simplify right side
    324,132.60x = 92,844,176,214.78
  5. Step 5: Solve for x
    x = 92,844,176,214.78/324,132.60
  6. Step 6: Final answer
    x = 286,438.87

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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.