Home / 256,621.05-384,494.18-219,004.65

Finding the Fourth Proportional to 256,621.05, 384,494.18 and 219,004.65

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Solution

The fourth proportional to 256,621.05, 384,494.18 and 219,004.65 is: 328,133.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,621.05 : 384,494.18 = 219,004.65 : x
  2. Step 2: Convert to fraction form
    256,621.05/384,494.18 = 219,004.65/x
  3. Step 3: Cross multiply
    256,621.05x = 384,494.18 × 219,004.65
  4. Step 4: Simplify right side
    256,621.05x = 84,206,012,222.91
  5. Step 5: Solve for x
    x = 84,206,012,222.91/256,621.05
  6. Step 6: Final answer
    x = 328,133.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.