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Finding the Fourth Proportional to 323,756.61, 485,339.05 and 113,279.73

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Solution

The fourth proportional to 323,756.61, 485,339.05 and 113,279.73 is: 169,816.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,756.61 : 485,339.05 = 113,279.73 : x
  2. Step 2: Convert to fraction form
    323,756.61/485,339.05 = 113,279.73/x
  3. Step 3: Cross multiply
    323,756.61x = 485,339.05 × 113,279.73
  4. Step 4: Simplify right side
    323,756.61x = 54,979,076,542.46
  5. Step 5: Solve for x
    x = 54,979,076,542.46/323,756.61
  6. Step 6: Final answer
    x = 169,816.07

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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.