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Finding the Fourth Proportional to 445,307.28, 666,384 and 276,906.80

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Solution

The fourth proportional to 445,307.28, 666,384 and 276,906.80 is: 414,379.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,307.28 : 666,384 = 276,906.80 : x
  2. Step 2: Convert to fraction form
    445,307.28/666,384 = 276,906.80/x
  3. Step 3: Cross multiply
    445,307.28x = 666,384 × 276,906.80
  4. Step 4: Simplify right side
    445,307.28x = 184,526,261,011.20
  5. Step 5: Solve for x
    x = 184,526,261,011.20/445,307.28
  6. Step 6: Final answer
    x = 414,379.62

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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.