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Finding the Fourth Proportional to 309,800.67, 464,664.09 and 85,183.93

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Solution

The fourth proportional to 309,800.67, 464,664.09 and 85,183.93 is: 127,765.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,800.67 : 464,664.09 = 85,183.93 : x
  2. Step 2: Convert to fraction form
    309,800.67/464,664.09 = 85,183.93/x
  3. Step 3: Cross multiply
    309,800.67x = 464,664.09 × 85,183.93
  4. Step 4: Simplify right side
    309,800.67x = 39,581,913,316.07
  5. Step 5: Solve for x
    x = 39,581,913,316.07/309,800.67
  6. Step 6: Final answer
    x = 127,765.74

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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.