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Finding the Fourth Proportional to 445,908.60, 668,943.90 and 146,305.80

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Solution

The fourth proportional to 445,908.60, 668,943.90 and 146,305.80 is: 219,485.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,908.60 : 668,943.90 = 146,305.80 : x
  2. Step 2: Convert to fraction form
    445,908.60/668,943.90 = 146,305.80/x
  3. Step 3: Cross multiply
    445,908.60x = 668,943.90 × 146,305.80
  4. Step 4: Simplify right side
    445,908.60x = 97,870,372,444.62
  5. Step 5: Solve for x
    x = 97,870,372,444.62/445,908.60
  6. Step 6: Final answer
    x = 219,485.28

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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.