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Finding the Fourth Proportional to 309,326.86, 426,850.86 and 181,977.85

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Solution

The fourth proportional to 309,326.86, 426,850.86 and 181,977.85 is: 251,117.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,326.86 : 426,850.86 = 181,977.85 : x
  2. Step 2: Convert to fraction form
    309,326.86/426,850.86 = 181,977.85/x
  3. Step 3: Cross multiply
    309,326.86x = 426,850.86 × 181,977.85
  4. Step 4: Simplify right side
    309,326.86x = 77,677,401,773.45
  5. Step 5: Solve for x
    x = 77,677,401,773.45/309,326.86
  6. Step 6: Final answer
    x = 251,117.55

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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.