Home / 258,461.24-388,134.72-140,363.24

Finding the Fourth Proportional to 258,461.24, 388,134.72 and 140,363.24

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Solution

The fourth proportional to 258,461.24, 388,134.72 and 140,363.24 is: 210,785.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,461.24 : 388,134.72 = 140,363.24 : x
  2. Step 2: Convert to fraction form
    258,461.24/388,134.72 = 140,363.24/x
  3. Step 3: Cross multiply
    258,461.24x = 388,134.72 × 140,363.24
  4. Step 4: Simplify right side
    258,461.24x = 54,479,846,855.69
  5. Step 5: Solve for x
    x = 54,479,846,855.69/258,461.24
  6. Step 6: Final answer
    x = 210,785.37

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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.