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Finding the Fourth Proportional to 486,011, 729,054.58 and 131,019.60

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Solution

The fourth proportional to 486,011, 729,054.58 and 131,019.60 is: 196,539.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,011 : 729,054.58 = 131,019.60 : x
  2. Step 2: Convert to fraction form
    486,011/729,054.58 = 131,019.60/x
  3. Step 3: Cross multiply
    486,011x = 729,054.58 × 131,019.60
  4. Step 4: Simplify right side
    486,011x = 95,520,439,449.77
  5. Step 5: Solve for x
    x = 95,520,439,449.77/486,011
  6. Step 6: Final answer
    x = 196,539.67

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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.