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Finding the Fourth Proportional to 445,793.40, 668,687.64 and 108,835.80

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Solution

The fourth proportional to 445,793.40, 668,687.64 and 108,835.80 is: 163,253.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,793.40 : 668,687.64 = 108,835.80 : x
  2. Step 2: Convert to fraction form
    445,793.40/668,687.64 = 108,835.80/x
  3. Step 3: Cross multiply
    445,793.40x = 668,687.64 × 108,835.80
  4. Step 4: Simplify right side
    445,793.40x = 72,777,154,249.51
  5. Step 5: Solve for x
    x = 72,777,154,249.51/445,793.40
  6. Step 6: Final answer
    x = 163,253.10

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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.