Home / 309,208.23-427,566.30-245,435.31

Finding the Fourth Proportional to 309,208.23, 427,566.30 and 245,435.31

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Solution

The fourth proportional to 309,208.23, 427,566.30 and 245,435.31 is: 339,382.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,208.23 : 427,566.30 = 245,435.31 : x
  2. Step 2: Convert to fraction form
    309,208.23/427,566.30 = 245,435.31/x
  3. Step 3: Cross multiply
    309,208.23x = 427,566.30 × 245,435.31
  4. Step 4: Simplify right side
    309,208.23x = 104,939,864,021.05
  5. Step 5: Solve for x
    x = 104,939,864,021.05/309,208.23
  6. Step 6: Final answer
    x = 339,382.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.