Home / 278,848.98-418,274.82-68,486.94

Finding the Fourth Proportional to 278,848.98, 418,274.82 and 68,486.94

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Solution

The fourth proportional to 278,848.98, 418,274.82 and 68,486.94 is: 102,730.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,848.98 : 418,274.82 = 68,486.94 : x
  2. Step 2: Convert to fraction form
    278,848.98/418,274.82 = 68,486.94/x
  3. Step 3: Cross multiply
    278,848.98x = 418,274.82 × 68,486.94
  4. Step 4: Simplify right side
    278,848.98x = 28,646,362,500.85
  5. Step 5: Solve for x
    x = 28,646,362,500.85/278,848.98
  6. Step 6: Final answer
    x = 102,730.74

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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.