Home / 278,912.08-384,892.14-156,396.34

Finding the Fourth Proportional to 278,912.08, 384,892.14 and 156,396.34

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Solution

The fourth proportional to 278,912.08, 384,892.14 and 156,396.34 is: 215,823.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,912.08 : 384,892.14 = 156,396.34 : x
  2. Step 2: Convert to fraction form
    278,912.08/384,892.14 = 156,396.34/x
  3. Step 3: Cross multiply
    278,912.08x = 384,892.14 × 156,396.34
  4. Step 4: Simplify right side
    278,912.08x = 60,195,721,990.77
  5. Step 5: Solve for x
    x = 60,195,721,990.77/278,912.08
  6. Step 6: Final answer
    x = 215,823.29

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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.