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Finding the Fourth Proportional to 324,627.32, 486,993.30 and 99,987.65

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Solution

The fourth proportional to 324,627.32, 486,993.30 and 99,987.65 is: 149,997.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,627.32 : 486,993.30 = 99,987.65 : x
  2. Step 2: Convert to fraction form
    324,627.32/486,993.30 = 99,987.65/x
  3. Step 3: Cross multiply
    324,627.32x = 486,993.30 × 99,987.65
  4. Step 4: Simplify right side
    324,627.32x = 48,693,315,492.70
  5. Step 5: Solve for x
    x = 48,693,315,492.70/324,627.32
  6. Step 6: Final answer
    x = 149,997.59

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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.