Home / 407,861.15-611,162.96-218,346.66

Finding the Fourth Proportional to 407,861.15, 611,162.96 and 218,346.66

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Solution

The fourth proportional to 407,861.15, 611,162.96 and 218,346.66 is: 327,183.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,861.15 : 611,162.96 = 218,346.66 : x
  2. Step 2: Convert to fraction form
    407,861.15/611,162.96 = 218,346.66/x
  3. Step 3: Cross multiply
    407,861.15x = 611,162.96 × 218,346.66
  4. Step 4: Simplify right side
    407,861.15x = 133,445,389,939.98
  5. Step 5: Solve for x
    x = 133,445,389,939.98/407,861.15
  6. Step 6: Final answer
    x = 327,183.38

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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.