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Finding the Fourth Proportional to 309,281.52, 426,768.60 and 181,910.64

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Solution

The fourth proportional to 309,281.52, 426,768.60 and 181,910.64 is: 251,013.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,281.52 : 426,768.60 = 181,910.64 : x
  2. Step 2: Convert to fraction form
    309,281.52/426,768.60 = 181,910.64/x
  3. Step 3: Cross multiply
    309,281.52x = 426,768.60 × 181,910.64
  4. Step 4: Simplify right side
    309,281.52x = 77,633,749,157.90
  5. Step 5: Solve for x
    x = 77,633,749,157.90/309,281.52
  6. Step 6: Final answer
    x = 251,013.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.