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Finding the Fourth Proportional to 414,626.80, 621,479.40 and 177,929.20

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Solution

The fourth proportional to 414,626.80, 621,479.40 and 177,929.20 is: 266,696.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,626.80 : 621,479.40 = 177,929.20 : x
  2. Step 2: Convert to fraction form
    414,626.80/621,479.40 = 177,929.20/x
  3. Step 3: Cross multiply
    414,626.80x = 621,479.40 × 177,929.20
  4. Step 4: Simplify right side
    414,626.80x = 110,579,332,458.48
  5. Step 5: Solve for x
    x = 110,579,332,458.48/414,626.80
  6. Step 6: Final answer
    x = 266,696.06

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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.