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Finding the Fourth Proportional to 404,727.90, 606,986.10 and 120,341.88

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Solution

The fourth proportional to 404,727.90, 606,986.10 and 120,341.88 is: 180,481.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,727.90 : 606,986.10 = 120,341.88 : x
  2. Step 2: Convert to fraction form
    404,727.90/606,986.10 = 120,341.88/x
  3. Step 3: Cross multiply
    404,727.90x = 606,986.10 × 120,341.88
  4. Step 4: Simplify right side
    404,727.90x = 73,045,848,407.87
  5. Step 5: Solve for x
    x = 73,045,848,407.87/404,727.90
  6. Step 6: Final answer
    x = 180,481.38

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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.