Home / 258,844.12-388,266.06-71,855.56

Finding the Fourth Proportional to 258,844.12, 388,266.06 and 71,855.56

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Solution

The fourth proportional to 258,844.12, 388,266.06 and 71,855.56 is: 107,783.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,844.12 : 388,266.06 = 71,855.56 : x
  2. Step 2: Convert to fraction form
    258,844.12/388,266.06 = 71,855.56/x
  3. Step 3: Cross multiply
    258,844.12x = 388,266.06 × 71,855.56
  4. Step 4: Simplify right side
    258,844.12x = 27,899,075,170.29
  5. Step 5: Solve for x
    x = 27,899,075,170.29/258,844.12
  6. Step 6: Final answer
    x = 107,783.31

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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.