Home / 278,301.90-384,329.43-192,480.78

Finding the Fourth Proportional to 278,301.90, 384,329.43 and 192,480.78

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Solution

The fourth proportional to 278,301.90, 384,329.43 and 192,480.78 is: 265,812.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,301.90 : 384,329.43 = 192,480.78 : x
  2. Step 2: Convert to fraction form
    278,301.90/384,329.43 = 192,480.78/x
  3. Step 3: Cross multiply
    278,301.90x = 384,329.43 × 192,480.78
  4. Step 4: Simplify right side
    278,301.90x = 73,976,028,463.36
  5. Step 5: Solve for x
    x = 73,976,028,463.36/278,301.90
  6. Step 6: Final answer
    x = 265,812.16

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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.