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Finding the Fourth Proportional to 203,081.94, 304,615.35 and 53,320.86

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Solution

The fourth proportional to 203,081.94, 304,615.35 and 53,320.86 is: 79,979.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,081.94 : 304,615.35 = 53,320.86 : x
  2. Step 2: Convert to fraction form
    203,081.94/304,615.35 = 53,320.86/x
  3. Step 3: Cross multiply
    203,081.94x = 304,615.35 × 53,320.86
  4. Step 4: Simplify right side
    203,081.94x = 16,242,352,431.20
  5. Step 5: Solve for x
    x = 16,242,352,431.20/203,081.94
  6. Step 6: Final answer
    x = 79,979.31

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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.