Home / 399,219.39-599,141.93-278,491.05

Finding the Fourth Proportional to 399,219.39, 599,141.93 and 278,491.05

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Solution

The fourth proportional to 399,219.39, 599,141.93 and 278,491.05 is: 417,954.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,219.39 : 599,141.93 = 278,491.05 : x
  2. Step 2: Convert to fraction form
    399,219.39/599,141.93 = 278,491.05/x
  3. Step 3: Cross multiply
    399,219.39x = 599,141.93 × 278,491.05
  4. Step 4: Simplify right side
    399,219.39x = 166,855,663,792.27
  5. Step 5: Solve for x
    x = 166,855,663,792.27/399,219.39
  6. Step 6: Final answer
    x = 417,954.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.