Home / 259,286.63-388,995.55-72,298.13

Finding the Fourth Proportional to 259,286.63, 388,995.55 and 72,298.13

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Solution

The fourth proportional to 259,286.63, 388,995.55 and 72,298.13 is: 108,465.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,286.63 : 388,995.55 = 72,298.13 : x
  2. Step 2: Convert to fraction form
    259,286.63/388,995.55 = 72,298.13/x
  3. Step 3: Cross multiply
    259,286.63x = 388,995.55 × 72,298.13
  4. Step 4: Simplify right side
    259,286.63x = 28,123,648,717.60
  5. Step 5: Solve for x
    x = 28,123,648,717.60/259,286.63
  6. Step 6: Final answer
    x = 108,465.48

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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.