Home / 258,278.45-356,406.97-143,549.65

Finding the Fourth Proportional to 258,278.45, 356,406.97 and 143,549.65

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Solution

The fourth proportional to 258,278.45, 356,406.97 and 143,549.65 is: 198,088.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,278.45 : 356,406.97 = 143,549.65 : x
  2. Step 2: Convert to fraction form
    258,278.45/356,406.97 = 143,549.65/x
  3. Step 3: Cross multiply
    258,278.45x = 356,406.97 × 143,549.65
  4. Step 4: Simplify right side
    258,278.45x = 51,162,094,152.06
  5. Step 5: Solve for x
    x = 51,162,094,152.06/258,278.45
  6. Step 6: Final answer
    x = 198,088.90

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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.