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Finding the Fourth Proportional to 445,491.86, 668,219.54 and 161,189.15

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Solution

The fourth proportional to 445,491.86, 668,219.54 and 161,189.15 is: 241,777.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,491.86 : 668,219.54 = 161,189.15 : x
  2. Step 2: Convert to fraction form
    445,491.86/668,219.54 = 161,189.15/x
  3. Step 3: Cross multiply
    445,491.86x = 668,219.54 × 161,189.15
  4. Step 4: Simplify right side
    445,491.86x = 107,709,735,518.95
  5. Step 5: Solve for x
    x = 107,709,735,518.95/445,491.86
  6. Step 6: Final answer
    x = 241,777.12

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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.