Home / 278,953.13-418,426.05-68,592.89

Finding the Fourth Proportional to 278,953.13, 418,426.05 and 68,592.89

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Solution

The fourth proportional to 278,953.13, 418,426.05 and 68,592.89 is: 102,888.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,953.13 : 418,426.05 = 68,592.89 : x
  2. Step 2: Convert to fraction form
    278,953.13/418,426.05 = 68,592.89/x
  3. Step 3: Cross multiply
    278,953.13x = 418,426.05 × 68,592.89
  4. Step 4: Simplify right side
    278,953.13x = 28,701,052,020.78
  5. Step 5: Solve for x
    x = 28,701,052,020.78/278,953.13
  6. Step 6: Final answer
    x = 102,888.44

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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.