Home / 257,179.90-355,585.49-225,257.20

Finding the Fourth Proportional to 257,179.90, 355,585.49 and 225,257.20

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Solution

The fourth proportional to 257,179.90, 355,585.49 and 225,257.20 is: 311,448.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,179.90 : 355,585.49 = 225,257.20 : x
  2. Step 2: Convert to fraction form
    257,179.90/355,585.49 = 225,257.20/x
  3. Step 3: Cross multiply
    257,179.90x = 355,585.49 × 225,257.20
  4. Step 4: Simplify right side
    257,179.90x = 80,098,191,838.03
  5. Step 5: Solve for x
    x = 80,098,191,838.03/257,179.90
  6. Step 6: Final answer
    x = 311,448.10

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1.5x scale

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.