Home / 258,156.72-356,235.12-143,438.85

Finding the Fourth Proportional to 258,156.72, 356,235.12 and 143,438.85

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Solution

The fourth proportional to 258,156.72, 356,235.12 and 143,438.85 is: 197,933.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,156.72 : 356,235.12 = 143,438.85 : x
  2. Step 2: Convert to fraction form
    258,156.72/356,235.12 = 143,438.85/x
  3. Step 3: Cross multiply
    258,156.72x = 356,235.12 × 143,438.85
  4. Step 4: Simplify right side
    258,156.72x = 51,097,955,942.41
  5. Step 5: Solve for x
    x = 51,097,955,942.41/258,156.72
  6. Step 6: Final answer
    x = 197,933.86

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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.