Home / 278,340.84-418,002.30-207,282.78

Finding the Fourth Proportional to 278,340.84, 418,002.30 and 207,282.78

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Solution

The fourth proportional to 278,340.84, 418,002.30 and 207,282.78 is: 311,289.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,340.84 : 418,002.30 = 207,282.78 : x
  2. Step 2: Convert to fraction form
    278,340.84/418,002.30 = 207,282.78/x
  3. Step 3: Cross multiply
    278,340.84x = 418,002.30 × 207,282.78
  4. Step 4: Simplify right side
    278,340.84x = 86,644,678,790.39
  5. Step 5: Solve for x
    x = 86,644,678,790.39/278,340.84
  6. Step 6: Final answer
    x = 311,289.85

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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.