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Finding the Fourth Proportional to 329,992.72, 455,390.28 and 179,089.68

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Solution

The fourth proportional to 329,992.72, 455,390.28 and 179,089.68 is: 247,143.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,992.72 : 455,390.28 = 179,089.68 : x
  2. Step 2: Convert to fraction form
    329,992.72/455,390.28 = 179,089.68/x
  3. Step 3: Cross multiply
    329,992.72x = 455,390.28 × 179,089.68
  4. Step 4: Simplify right side
    329,992.72x = 81,555,699,520.31
  5. Step 5: Solve for x
    x = 81,555,699,520.31/329,992.72
  6. Step 6: Final answer
    x = 247,143.94

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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.