Home / 409,380.54-614,126.79-143,079.36

Finding the Fourth Proportional to 409,380.54, 614,126.79 and 143,079.36

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Solution

The fourth proportional to 409,380.54, 614,126.79 and 143,079.36 is: 214,638.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,380.54 : 614,126.79 = 143,079.36 : x
  2. Step 2: Convert to fraction form
    409,380.54/614,126.79 = 143,079.36/x
  3. Step 3: Cross multiply
    409,380.54x = 614,126.79 × 143,079.36
  4. Step 4: Simplify right side
    409,380.54x = 87,868,868,072.05
  5. Step 5: Solve for x
    x = 87,868,868,072.05/409,380.54
  6. Step 6: Final answer
    x = 214,638.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.