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Finding the Fourth Proportional to 391,419.91, 540,150.32 and 230,285.33

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Solution

The fourth proportional to 391,419.91, 540,150.32 and 230,285.33 is: 317,788.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,419.91 : 540,150.32 = 230,285.33 : x
  2. Step 2: Convert to fraction form
    391,419.91/540,150.32 = 230,285.33/x
  3. Step 3: Cross multiply
    391,419.91x = 540,150.32 × 230,285.33
  4. Step 4: Simplify right side
    391,419.91x = 124,388,694,591.33
  5. Step 5: Solve for x
    x = 124,388,694,591.33/391,419.91
  6. Step 6: Final answer
    x = 317,788.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.