Home / 258,418.20-356,588.55-155,046.90

Finding the Fourth Proportional to 258,418.20, 356,588.55 and 155,046.90

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Solution

The fourth proportional to 258,418.20, 356,588.55 and 155,046.90 is: 213,947.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,418.20 : 356,588.55 = 155,046.90 : x
  2. Step 2: Convert to fraction form
    258,418.20/356,588.55 = 155,046.90/x
  3. Step 3: Cross multiply
    258,418.20x = 356,588.55 × 155,046.90
  4. Step 4: Simplify right side
    258,418.20x = 55,287,949,253.00
  5. Step 5: Solve for x
    x = 55,287,949,253.00/258,418.20
  6. Step 6: Final answer
    x = 213,947.58

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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.