Home / 258,156.80-356,251.89-143,436.50

Finding the Fourth Proportional to 258,156.80, 356,251.89 and 143,436.50

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Solution

The fourth proportional to 258,156.80, 356,251.89 and 143,436.50 is: 197,939.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,156.80 : 356,251.89 = 143,436.50 : x
  2. Step 2: Convert to fraction form
    258,156.80/356,251.89 = 143,436.50/x
  3. Step 3: Cross multiply
    258,156.80x = 356,251.89 × 143,436.50
  4. Step 4: Simplify right side
    258,156.80x = 51,099,524,219.99
  5. Step 5: Solve for x
    x = 51,099,524,219.99/258,156.80
  6. Step 6: Final answer
    x = 197,939.87

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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.