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Finding the Fourth Proportional to 309,651.83, 464,478.44 and 85,015.34

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Solution

The fourth proportional to 309,651.83, 464,478.44 and 85,015.34 is: 127,523.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,651.83 : 464,478.44 = 85,015.34 : x
  2. Step 2: Convert to fraction form
    309,651.83/464,478.44 = 85,015.34/x
  3. Step 3: Cross multiply
    309,651.83x = 464,478.44 × 85,015.34
  4. Step 4: Simplify right side
    309,651.83x = 39,487,789,751.80
  5. Step 5: Solve for x
    x = 39,487,789,751.80/309,651.83
  6. Step 6: Final answer
    x = 127,523.19

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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.