Home / 309,942.51-427,726.98-173,986.26

Finding the Fourth Proportional to 309,942.51, 427,726.98 and 173,986.26

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Solution

The fourth proportional to 309,942.51, 427,726.98 and 173,986.26 is: 240,104.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,942.51 : 427,726.98 = 173,986.26 : x
  2. Step 2: Convert to fraction form
    309,942.51/427,726.98 = 173,986.26/x
  3. Step 3: Cross multiply
    309,942.51x = 427,726.98 × 173,986.26
  4. Step 4: Simplify right side
    309,942.51x = 74,418,617,551.29
  5. Step 5: Solve for x
    x = 74,418,617,551.29/309,942.51
  6. Step 6: Final answer
    x = 240,104.58

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1.5x scale

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.