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Finding the Fourth Proportional to 445,563.42, 668,384.37 and 125,718.05

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Solution

The fourth proportional to 445,563.42, 668,384.37 and 125,718.05 is: 188,588.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,563.42 : 668,384.37 = 125,718.05 : x
  2. Step 2: Convert to fraction form
    445,563.42/668,384.37 = 125,718.05/x
  3. Step 3: Cross multiply
    445,563.42x = 668,384.37 × 125,718.05
  4. Step 4: Simplify right side
    445,563.42x = 84,027,976,304.96
  5. Step 5: Solve for x
    x = 84,027,976,304.96/445,563.42
  6. Step 6: Final answer
    x = 188,588.14

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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.