Home / 258,418.06-356,636.84-155,056.12

Finding the Fourth Proportional to 258,418.06, 356,636.84 and 155,056.12

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Solution

The fourth proportional to 258,418.06, 356,636.84 and 155,056.12 is: 213,989.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,418.06 : 356,636.84 = 155,056.12 : x
  2. Step 2: Convert to fraction form
    258,418.06/356,636.84 = 155,056.12/x
  3. Step 3: Cross multiply
    258,418.06x = 356,636.84 × 155,056.12
  4. Step 4: Simplify right side
    258,418.06x = 55,298,722,992.59
  5. Step 5: Solve for x
    x = 55,298,722,992.59/258,418.06
  6. Step 6: Final answer
    x = 213,989.39

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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.