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Finding the Fourth Proportional to 423,704.85, 635,557.05 and 108,161.64

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Solution

The fourth proportional to 423,704.85, 635,557.05 and 108,161.64 is: 162,242.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,704.85 : 635,557.05 = 108,161.64 : x
  2. Step 2: Convert to fraction form
    423,704.85/635,557.05 = 108,161.64/x
  3. Step 3: Cross multiply
    423,704.85x = 635,557.05 × 108,161.64
  4. Step 4: Simplify right side
    423,704.85x = 68,742,892,841.56
  5. Step 5: Solve for x
    x = 68,742,892,841.56/423,704.85
  6. Step 6: Final answer
    x = 162,242.40

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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.