Home / 258,896.13-388,437.35-90,441.24

Finding the Fourth Proportional to 258,896.13, 388,437.35 and 90,441.24

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Solution

The fourth proportional to 258,896.13, 388,437.35 and 90,441.24 is: 135,694.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,896.13 : 388,437.35 = 90,441.24 : x
  2. Step 2: Convert to fraction form
    258,896.13/388,437.35 = 90,441.24/x
  3. Step 3: Cross multiply
    258,896.13x = 388,437.35 × 90,441.24
  4. Step 4: Simplify right side
    258,896.13x = 35,130,755,144.11
  5. Step 5: Solve for x
    x = 35,130,755,144.11/258,896.13
  6. Step 6: Final answer
    x = 135,694.40

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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.