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Finding the Fourth Proportional to 408,055.40, 612,083.10 and 366,721.10

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Solution

The fourth proportional to 408,055.40, 612,083.10 and 366,721.10 is: 550,081.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,055.40 : 612,083.10 = 366,721.10 : x
  2. Step 2: Convert to fraction form
    408,055.40/612,083.10 = 366,721.10/x
  3. Step 3: Cross multiply
    408,055.40x = 612,083.10 × 366,721.10
  4. Step 4: Simplify right side
    408,055.40x = 224,463,787,723.41
  5. Step 5: Solve for x
    x = 224,463,787,723.41/408,055.40
  6. Step 6: Final answer
    x = 550,081.65

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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.