Home / 259,851.54-389,778.27-79,935.72

Finding the Fourth Proportional to 259,851.54, 389,778.27 and 79,935.72

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Solution

The fourth proportional to 259,851.54, 389,778.27 and 79,935.72 is: 119,903.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,851.54 : 389,778.27 = 79,935.72 : x
  2. Step 2: Convert to fraction form
    259,851.54/389,778.27 = 79,935.72/x
  3. Step 3: Cross multiply
    259,851.54x = 389,778.27 × 79,935.72
  4. Step 4: Simplify right side
    259,851.54x = 31,157,208,509.60
  5. Step 5: Solve for x
    x = 31,157,208,509.60/259,851.54
  6. Step 6: Final answer
    x = 119,903.88

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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.