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Finding the Fourth Proportional to 436,808.78, 655,212.90 and 121,265.60

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Solution

The fourth proportional to 436,808.78, 655,212.90 and 121,265.60 is: 181,898.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,808.78 : 655,212.90 = 121,265.60 : x
  2. Step 2: Convert to fraction form
    436,808.78/655,212.90 = 121,265.60/x
  3. Step 3: Cross multiply
    436,808.78x = 655,212.90 × 121,265.60
  4. Step 4: Simplify right side
    436,808.78x = 79,454,785,446.24
  5. Step 5: Solve for x
    x = 79,454,785,446.24/436,808.78
  6. Step 6: Final answer
    x = 181,898.33

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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.