Home / 420,361.20-580,112.46-229,385.07

Finding the Fourth Proportional to 420,361.20, 580,112.46 and 229,385.07

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Solution

The fourth proportional to 420,361.20, 580,112.46 and 229,385.07 is: 316,559.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,361.20 : 580,112.46 = 229,385.07 : x
  2. Step 2: Convert to fraction form
    420,361.20/580,112.46 = 229,385.07/x
  3. Step 3: Cross multiply
    420,361.20x = 580,112.46 × 229,385.07
  4. Step 4: Simplify right side
    420,361.20x = 133,069,137,244.97
  5. Step 5: Solve for x
    x = 133,069,137,244.97/420,361.20
  6. Step 6: Final answer
    x = 316,559.04

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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.