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Finding the Fourth Proportional to 445,290.58, 666,359.16 and 276,890.20

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Solution

The fourth proportional to 445,290.58, 666,359.16 and 276,890.20 is: 414,354.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,290.58 : 666,359.16 = 276,890.20 : x
  2. Step 2: Convert to fraction form
    445,290.58/666,359.16 = 276,890.20/x
  3. Step 3: Cross multiply
    445,290.58x = 666,359.16 × 276,890.20
  4. Step 4: Simplify right side
    445,290.58x = 184,508,318,380.00
  5. Step 5: Solve for x
    x = 184,508,318,380.00/445,290.58
  6. Step 6: Final answer
    x = 414,354.86

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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.