Home / 258,799.72-388,199.58-71,811.28

Finding the Fourth Proportional to 258,799.72, 388,199.58 and 71,811.28

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Solution

The fourth proportional to 258,799.72, 388,199.58 and 71,811.28 is: 107,716.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,799.72 : 388,199.58 = 71,811.28 : x
  2. Step 2: Convert to fraction form
    258,799.72/388,199.58 = 71,811.28/x
  3. Step 3: Cross multiply
    258,799.72x = 388,199.58 × 71,811.28
  4. Step 4: Simplify right side
    258,799.72x = 27,877,108,735.26
  5. Step 5: Solve for x
    x = 27,877,108,735.26/258,799.72
  6. Step 6: Final answer
    x = 107,716.92

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1.5x scale

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.