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Finding the Fourth Proportional to 419,106.54, 628,782.29 and 134,790.70

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Solution

The fourth proportional to 419,106.54, 628,782.29 and 134,790.70 is: 202,225.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,106.54 : 628,782.29 = 134,790.70 : x
  2. Step 2: Convert to fraction form
    419,106.54/628,782.29 = 134,790.70/x
  3. Step 3: Cross multiply
    419,106.54x = 628,782.29 × 134,790.70
  4. Step 4: Simplify right side
    419,106.54x = 84,754,005,016.70
  5. Step 5: Solve for x
    x = 84,754,005,016.70/419,106.54
  6. Step 6: Final answer
    x = 202,225.44

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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.