Home / 279,585.20-385,843.78-210,551.04

Finding the Fourth Proportional to 279,585.20, 385,843.78 and 210,551.04

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Solution

The fourth proportional to 279,585.20, 385,843.78 and 210,551.04 is: 290,572.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,585.20 : 385,843.78 = 210,551.04 : x
  2. Step 2: Convert to fraction form
    279,585.20/385,843.78 = 210,551.04/x
  3. Step 3: Cross multiply
    279,585.20x = 385,843.78 × 210,551.04
  4. Step 4: Simplify right side
    279,585.20x = 81,239,809,156.53
  5. Step 5: Solve for x
    x = 81,239,809,156.53/279,585.20
  6. Step 6: Final answer
    x = 290,572.64

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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.