Home / 259,587.07-389,378.85-139,700.44

Finding the Fourth Proportional to 259,587.07, 389,378.85 and 139,700.44

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Solution

The fourth proportional to 259,587.07, 389,378.85 and 139,700.44 is: 209,549.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,587.07 : 389,378.85 = 139,700.44 : x
  2. Step 2: Convert to fraction form
    259,587.07/389,378.85 = 139,700.44/x
  3. Step 3: Cross multiply
    259,587.07x = 389,378.85 × 139,700.44
  4. Step 4: Simplify right side
    259,587.07x = 54,396,396,671.69
  5. Step 5: Solve for x
    x = 54,396,396,671.69/259,587.07
  6. Step 6: Final answer
    x = 209,549.72

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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.