Home / 420,550.98-580,340.18-239,245.95

Finding the Fourth Proportional to 420,550.98, 580,340.18 and 239,245.95

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Solution

The fourth proportional to 420,550.98, 580,340.18 and 239,245.95 is: 330,147.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,550.98 : 580,340.18 = 239,245.95 : x
  2. Step 2: Convert to fraction form
    420,550.98/580,340.18 = 239,245.95/x
  3. Step 3: Cross multiply
    420,550.98x = 580,340.18 × 239,245.95
  4. Step 4: Simplify right side
    420,550.98x = 138,844,036,491.04
  5. Step 5: Solve for x
    x = 138,844,036,491.04/420,550.98
  6. Step 6: Final answer
    x = 330,147.93

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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.