Home / 420,826.10-580,739.09-229,839.50

Finding the Fourth Proportional to 420,826.10, 580,739.09 and 229,839.50

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Solution

The fourth proportional to 420,826.10, 580,739.09 and 229,839.50 is: 317,178.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,826.10 : 580,739.09 = 229,839.50 : x
  2. Step 2: Convert to fraction form
    420,826.10/580,739.09 = 229,839.50/x
  3. Step 3: Cross multiply
    420,826.10x = 580,739.09 × 229,839.50
  4. Step 4: Simplify right side
    420,826.10x = 133,476,778,023.16
  5. Step 5: Solve for x
    x = 133,476,778,023.16/420,826.10
  6. Step 6: Final answer
    x = 317,178.00

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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.