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Finding the Fourth Proportional to 323,488.52, 485,322.77 and 141,135.28

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Solution

The fourth proportional to 323,488.52, 485,322.77 and 141,135.28 is: 211,742.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,488.52 : 485,322.77 = 141,135.28 : x
  2. Step 2: Convert to fraction form
    323,488.52/485,322.77 = 141,135.28/x
  3. Step 3: Cross multiply
    323,488.52x = 485,322.77 × 141,135.28
  4. Step 4: Simplify right side
    323,488.52x = 68,496,164,173.86
  5. Step 5: Solve for x
    x = 68,496,164,173.86/323,488.52
  6. Step 6: Final answer
    x = 211,742.18

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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.