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Finding the Fourth Proportional to 323,890.84, 485,894.58 and 155,268.28

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Solution

The fourth proportional to 323,890.84, 485,894.58 and 155,268.28 is: 232,930.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,890.84 : 485,894.58 = 155,268.28 : x
  2. Step 2: Convert to fraction form
    323,890.84/485,894.58 = 155,268.28/x
  3. Step 3: Cross multiply
    323,890.84x = 485,894.58 × 155,268.28
  4. Step 4: Simplify right side
    323,890.84x = 75,444,015,697.92
  5. Step 5: Solve for x
    x = 75,444,015,697.92/323,890.84
  6. Step 6: Final answer
    x = 232,930.38

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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.