Home / 309,995.24-427,995.09-189,206.55

Finding the Fourth Proportional to 309,995.24, 427,995.09 and 189,206.55

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Solution

The fourth proportional to 309,995.24, 427,995.09 and 189,206.55 is: 261,228.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,995.24 : 427,995.09 = 189,206.55 : x
  2. Step 2: Convert to fraction form
    309,995.24/427,995.09 = 189,206.55/x
  3. Step 3: Cross multiply
    309,995.24x = 427,995.09 × 189,206.55
  4. Step 4: Simplify right side
    309,995.24x = 80,979,474,395.84
  5. Step 5: Solve for x
    x = 80,979,474,395.84/309,995.24
  6. Step 6: Final answer
    x = 261,228.13

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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.