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Finding the Fourth Proportional to 324,019.88, 486,011.62 and 99,379.70

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Solution

The fourth proportional to 324,019.88, 486,011.62 and 99,379.70 is: 149,063.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,019.88 : 486,011.62 = 99,379.70 : x
  2. Step 2: Convert to fraction form
    324,019.88/486,011.62 = 99,379.70/x
  3. Step 3: Cross multiply
    324,019.88x = 486,011.62 × 99,379.70
  4. Step 4: Simplify right side
    324,019.88x = 48,299,688,992.11
  5. Step 5: Solve for x
    x = 48,299,688,992.11/324,019.88
  6. Step 6: Final answer
    x = 149,063.97

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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.