Home / 258,834.16-388,253.64-81,337.24

Finding the Fourth Proportional to 258,834.16, 388,253.64 and 81,337.24

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Solution

The fourth proportional to 258,834.16, 388,253.64 and 81,337.24 is: 122,006.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,834.16 : 388,253.64 = 81,337.24 : x
  2. Step 2: Convert to fraction form
    258,834.16/388,253.64 = 81,337.24/x
  3. Step 3: Cross multiply
    258,834.16x = 388,253.64 × 81,337.24
  4. Step 4: Simplify right side
    258,834.16x = 31,579,479,497.55
  5. Step 5: Solve for x
    x = 31,579,479,497.55/258,834.16
  6. Step 6: Final answer
    x = 122,006.61

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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.