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Finding the Fourth Proportional to 323,913.70, 485,877.84 and 134,402.86

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Solution

The fourth proportional to 323,913.70, 485,877.84 and 134,402.86 is: 201,607.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,913.70 : 485,877.84 = 134,402.86 : x
  2. Step 2: Convert to fraction form
    323,913.70/485,877.84 = 134,402.86/x
  3. Step 3: Cross multiply
    323,913.70x = 485,877.84 × 134,402.86
  4. Step 4: Simplify right side
    323,913.70x = 65,303,371,306.62
  5. Step 5: Solve for x
    x = 65,303,371,306.62/323,913.70
  6. Step 6: Final answer
    x = 201,607.31

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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.