Home / 278,296.86-383,812.61-213,921.92

Finding the Fourth Proportional to 278,296.86, 383,812.61 and 213,921.92

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Solution

The fourth proportional to 278,296.86, 383,812.61 and 213,921.92 is: 295,030.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,296.86 : 383,812.61 = 213,921.92 : x
  2. Step 2: Convert to fraction form
    278,296.86/383,812.61 = 213,921.92/x
  3. Step 3: Cross multiply
    278,296.86x = 383,812.61 × 213,921.92
  4. Step 4: Simplify right side
    278,296.86x = 82,105,928,527.47
  5. Step 5: Solve for x
    x = 82,105,928,527.47/278,296.86
  6. Step 6: Final answer
    x = 295,030.02

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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.