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Finding the Fourth Proportional to 445,368.76, 668,043.43 and 108,411.19

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Solution

The fourth proportional to 445,368.76, 668,043.43 and 108,411.19 is: 162,614.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,368.76 : 668,043.43 = 108,411.19 : x
  2. Step 2: Convert to fraction form
    445,368.76/668,043.43 = 108,411.19/x
  3. Step 3: Cross multiply
    445,368.76x = 668,043.43 × 108,411.19
  4. Step 4: Simplify right side
    445,368.76x = 72,423,383,217.98
  5. Step 5: Solve for x
    x = 72,423,383,217.98/445,368.76
  6. Step 6: Final answer
    x = 162,614.42

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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.