Home / 259,140.24-388,543.80-109,339.56

Finding the Fourth Proportional to 259,140.24, 388,543.80 and 109,339.56

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Solution

The fourth proportional to 259,140.24, 388,543.80 and 109,339.56 is: 163,939.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,140.24 : 388,543.80 = 109,339.56 : x
  2. Step 2: Convert to fraction form
    259,140.24/388,543.80 = 109,339.56/x
  3. Step 3: Cross multiply
    259,140.24x = 388,543.80 × 109,339.56
  4. Step 4: Simplify right side
    259,140.24x = 42,483,208,132.73
  5. Step 5: Solve for x
    x = 42,483,208,132.73/259,140.24
  6. Step 6: Final answer
    x = 163,939.06

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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.