Home / 259,785.20-389,580.60-91,240.40

Finding the Fourth Proportional to 259,785.20, 389,580.60 and 91,240.40

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Solution

The fourth proportional to 259,785.20, 389,580.60 and 91,240.40 is: 136,826.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,785.20 : 389,580.60 = 91,240.40 : x
  2. Step 2: Convert to fraction form
    259,785.20/389,580.60 = 91,240.40/x
  3. Step 3: Cross multiply
    259,785.20x = 389,580.60 × 91,240.40
  4. Step 4: Simplify right side
    259,785.20x = 35,545,489,776.24
  5. Step 5: Solve for x
    x = 35,545,489,776.24/259,785.20
  6. Step 6: Final answer
    x = 136,826.46

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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.