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Finding the Fourth Proportional to 445,356.66, 668,025.63 and 108,399.20

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Solution

The fourth proportional to 445,356.66, 668,025.63 and 108,399.20 is: 162,596.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,356.66 : 668,025.63 = 108,399.20 : x
  2. Step 2: Convert to fraction form
    445,356.66/668,025.63 = 108,399.20/x
  3. Step 3: Cross multiply
    445,356.66x = 668,025.63 × 108,399.20
  4. Step 4: Simplify right side
    445,356.66x = 72,413,440,531.37
  5. Step 5: Solve for x
    x = 72,413,440,531.37/445,356.66
  6. Step 6: Final answer
    x = 162,596.51

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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.