Home / 258,287.20-356,433.98-143,562.92

Finding the Fourth Proportional to 258,287.20, 356,433.98 and 143,562.92

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Solution

The fourth proportional to 258,287.20, 356,433.98 and 143,562.92 is: 198,115.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,287.20 : 356,433.98 = 143,562.92 : x
  2. Step 2: Convert to fraction form
    258,287.20/356,433.98 = 143,562.92/x
  3. Step 3: Cross multiply
    258,287.20x = 356,433.98 × 143,562.92
  4. Step 4: Simplify right side
    258,287.20x = 51,170,700,456.04
  5. Step 5: Solve for x
    x = 51,170,700,456.04/258,287.20
  6. Step 6: Final answer
    x = 198,115.51

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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.