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Finding the Fourth Proportional to 436,655, 654,982.38 and 121,111.94

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Solution

The fourth proportional to 436,655, 654,982.38 and 121,111.94 is: 181,667.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,655 : 654,982.38 = 121,111.94 : x
  2. Step 2: Convert to fraction form
    436,655/654,982.38 = 121,111.94/x
  3. Step 3: Cross multiply
    436,655x = 654,982.38 × 121,111.94
  4. Step 4: Simplify right side
    436,655x = 79,326,186,707.62
  5. Step 5: Solve for x
    x = 79,326,186,707.62/436,655
  6. Step 6: Final answer
    x = 181,667.88

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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.