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Finding the Fourth Proportional to 445,290.76, 666,359.44 and 276,890.39

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Solution

The fourth proportional to 445,290.76, 666,359.44 and 276,890.39 is: 414,355.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,290.76 : 666,359.44 = 276,890.39 : x
  2. Step 2: Convert to fraction form
    445,290.76/666,359.44 = 276,890.39/x
  3. Step 3: Cross multiply
    445,290.76x = 666,359.44 × 276,890.39
  4. Step 4: Simplify right side
    445,290.76x = 184,508,521,197.76
  5. Step 5: Solve for x
    x = 184,508,521,197.76/445,290.76
  6. Step 6: Final answer
    x = 414,355.16

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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.