Home / 258,540.10-356,780.64-143,818.18

Finding the Fourth Proportional to 258,540.10, 356,780.64 and 143,818.18

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Solution

The fourth proportional to 258,540.10, 356,780.64 and 143,818.18 is: 198,466.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,540.10 : 356,780.64 = 143,818.18 : x
  2. Step 2: Convert to fraction form
    258,540.10/356,780.64 = 143,818.18/x
  3. Step 3: Cross multiply
    258,540.10x = 356,780.64 × 143,818.18
  4. Step 4: Simplify right side
    258,540.10x = 51,311,542,304.04
  5. Step 5: Solve for x
    x = 51,311,542,304.04/258,540.10
  6. Step 6: Final answer
    x = 198,466.48

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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.