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Finding the Fourth Proportional to 391,249.08, 586,128.69 and 222,885.45

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Solution

The fourth proportional to 391,249.08, 586,128.69 and 222,885.45 is: 333,903.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,249.08 : 586,128.69 = 222,885.45 : x
  2. Step 2: Convert to fraction form
    391,249.08/586,128.69 = 222,885.45/x
  3. Step 3: Cross multiply
    391,249.08x = 586,128.69 × 222,885.45
  4. Step 4: Simplify right side
    391,249.08x = 130,639,556,828.56
  5. Step 5: Solve for x
    x = 130,639,556,828.56/391,249.08
  6. Step 6: Final answer
    x = 333,903.81

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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.