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Finding the Fourth Proportional to 418,379.45, 577,361.61 and 227,392.86

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Solution

The fourth proportional to 418,379.45, 577,361.61 and 227,392.86 is: 313,801.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,379.45 : 577,361.61 = 227,392.86 : x
  2. Step 2: Convert to fraction form
    418,379.45/577,361.61 = 227,392.86/x
  3. Step 3: Cross multiply
    418,379.45x = 577,361.61 × 227,392.86
  4. Step 4: Simplify right side
    418,379.45x = 131,287,907,752.11
  5. Step 5: Solve for x
    x = 131,287,907,752.11/418,379.45
  6. Step 6: Final answer
    x = 313,801.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.