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Finding the Fourth Proportional to 436,388.92, 654,628.94 and 120,845.82

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Solution

The fourth proportional to 436,388.92, 654,628.94 and 120,845.82 is: 181,281.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,388.92 : 654,628.94 = 120,845.82 : x
  2. Step 2: Convert to fraction form
    436,388.92/654,628.94 = 120,845.82/x
  3. Step 3: Cross multiply
    436,388.92x = 654,628.94 × 120,845.82
  4. Step 4: Simplify right side
    436,388.92x = 79,109,173,353.83
  5. Step 5: Solve for x
    x = 79,109,173,353.83/436,388.92
  6. Step 6: Final answer
    x = 181,281.35

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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.