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Finding the Fourth Proportional to 436,662.25, 654,993.33 and 121,119.17

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Solution

The fourth proportional to 436,662.25, 654,993.33 and 121,119.17 is: 181,678.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,662.25 : 654,993.33 = 121,119.17 : x
  2. Step 2: Convert to fraction form
    436,662.25/654,993.33 = 121,119.17/x
  3. Step 3: Cross multiply
    436,662.25x = 654,993.33 × 121,119.17
  4. Step 4: Simplify right side
    436,662.25x = 79,332,248,485.14
  5. Step 5: Solve for x
    x = 79,332,248,485.14/436,662.25
  6. Step 6: Final answer
    x = 181,678.74

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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.