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Finding the Fourth Proportional to 324,199.32, 486,323.57 and 87,538.56

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Solution

The fourth proportional to 324,199.32, 486,323.57 and 87,538.56 is: 131,314.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,199.32 : 486,323.57 = 87,538.56 : x
  2. Step 2: Convert to fraction form
    324,199.32/486,323.57 = 87,538.56/x
  3. Step 3: Cross multiply
    324,199.32x = 486,323.57 × 87,538.56
  4. Step 4: Simplify right side
    324,199.32x = 42,572,065,011.86
  5. Step 5: Solve for x
    x = 42,572,065,011.86/324,199.32
  6. Step 6: Final answer
    x = 131,314.48

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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.