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Finding the Fourth Proportional to 321,485.86, 482,228.78 and 108,235.94

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Solution

The fourth proportional to 321,485.86, 482,228.78 and 108,235.94 is: 162,353.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,485.86 : 482,228.78 = 108,235.94 : x
  2. Step 2: Convert to fraction form
    321,485.86/482,228.78 = 108,235.94/x
  3. Step 3: Cross multiply
    321,485.86x = 482,228.78 × 108,235.94
  4. Step 4: Simplify right side
    321,485.86x = 52,194,485,298.35
  5. Step 5: Solve for x
    x = 52,194,485,298.35/321,485.86
  6. Step 6: Final answer
    x = 162,353.91

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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.