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Finding the Fourth Proportional to 384,979.86, 577,460.07 and 104,489.82

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Solution

The fourth proportional to 384,979.86, 577,460.07 and 104,489.82 is: 156,732.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,979.86 : 577,460.07 = 104,489.82 : x
  2. Step 2: Convert to fraction form
    384,979.86/577,460.07 = 104,489.82/x
  3. Step 3: Cross multiply
    384,979.86x = 577,460.07 × 104,489.82
  4. Step 4: Simplify right side
    384,979.86x = 60,338,698,771.49
  5. Step 5: Solve for x
    x = 60,338,698,771.49/384,979.86
  6. Step 6: Final answer
    x = 156,732.09

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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.