Home / 258,935.30-388,244.55-100,981.70

Finding the Fourth Proportional to 258,935.30, 388,244.55 and 100,981.70

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Solution

The fourth proportional to 258,935.30, 388,244.55 and 100,981.70 is: 151,410.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,935.30 : 388,244.55 = 100,981.70 : x
  2. Step 2: Convert to fraction form
    258,935.30/388,244.55 = 100,981.70/x
  3. Step 3: Cross multiply
    258,935.30x = 388,244.55 × 100,981.70
  4. Step 4: Simplify right side
    258,935.30x = 39,205,594,674.74
  5. Step 5: Solve for x
    x = 39,205,594,674.74/258,935.30
  6. Step 6: Final answer
    x = 151,410.78

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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.