Home / 278,934.10-385,114.43-214,288.20

Finding the Fourth Proportional to 278,934.10, 385,114.43 and 214,288.20

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Solution

The fourth proportional to 278,934.10, 385,114.43 and 214,288.20 is: 295,860.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,934.10 : 385,114.43 = 214,288.20 : x
  2. Step 2: Convert to fraction form
    278,934.10/385,114.43 = 214,288.20/x
  3. Step 3: Cross multiply
    278,934.10x = 385,114.43 × 214,288.20
  4. Step 4: Simplify right side
    278,934.10x = 82,525,477,998.73
  5. Step 5: Solve for x
    x = 82,525,477,998.73/278,934.10
  6. Step 6: Final answer
    x = 295,860.13

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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.