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Finding the Fourth Proportional to 414,048.70, 621,072.28 and 129,761.07

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Solution

The fourth proportional to 414,048.70, 621,072.28 and 129,761.07 is: 194,641.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,048.70 : 621,072.28 = 129,761.07 : x
  2. Step 2: Convert to fraction form
    414,048.70/621,072.28 = 129,761.07/x
  3. Step 3: Cross multiply
    414,048.70x = 621,072.28 × 129,761.07
  4. Step 4: Simplify right side
    414,048.70x = 80,591,003,600.14
  5. Step 5: Solve for x
    x = 80,591,003,600.14/414,048.70
  6. Step 6: Final answer
    x = 194,641.36

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1.5x scale

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.