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Finding the Fourth Proportional to 423,357.42, 634,778.55 and 179,911.52

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Solution

The fourth proportional to 423,357.42, 634,778.55 and 179,911.52 is: 269,757.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,357.42 : 634,778.55 = 179,911.52 : x
  2. Step 2: Convert to fraction form
    423,357.42/634,778.55 = 179,911.52/x
  3. Step 3: Cross multiply
    423,357.42x = 634,778.55 × 179,911.52
  4. Step 4: Simplify right side
    423,357.42x = 114,203,970,620.00
  5. Step 5: Solve for x
    x = 114,203,970,620.00/423,357.42
  6. Step 6: Final answer
    x = 269,757.81

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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.