Home / 309,399.42-464,099.55-84,761.85

Finding the Fourth Proportional to 309,399.42, 464,099.55 and 84,761.85

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Solution

The fourth proportional to 309,399.42, 464,099.55 and 84,761.85 is: 127,142.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,399.42 : 464,099.55 = 84,761.85 : x
  2. Step 2: Convert to fraction form
    309,399.42/464,099.55 = 84,761.85/x
  3. Step 3: Cross multiply
    309,399.42x = 464,099.55 × 84,761.85
  4. Step 4: Simplify right side
    309,399.42x = 39,337,936,442.17
  5. Step 5: Solve for x
    x = 39,337,936,442.17/309,399.42
  6. Step 6: Final answer
    x = 127,142.89

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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.