Home / 420,975.28-580,945.68-239,677.84

Finding the Fourth Proportional to 420,975.28, 580,945.68 and 239,677.84

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Solution

The fourth proportional to 420,975.28, 580,945.68 and 239,677.84 is: 330,755.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,975.28 : 580,945.68 = 239,677.84 : x
  2. Step 2: Convert to fraction form
    420,975.28/580,945.68 = 239,677.84/x
  3. Step 3: Cross multiply
    420,975.28x = 580,945.68 × 239,677.84
  4. Step 4: Simplify right side
    420,975.28x = 139,239,805,739.73
  5. Step 5: Solve for x
    x = 139,239,805,739.73/420,975.28
  6. Step 6: Final answer
    x = 330,755.30

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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.