Home / 259,488.23-389,297.12-72,498.11

Finding the Fourth Proportional to 259,488.23, 389,297.12 and 72,498.11

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Solution

The fourth proportional to 259,488.23, 389,297.12 and 72,498.11 is: 108,765.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,488.23 : 389,297.12 = 72,498.11 : x
  2. Step 2: Convert to fraction form
    259,488.23/389,297.12 = 72,498.11/x
  3. Step 3: Cross multiply
    259,488.23x = 389,297.12 × 72,498.11
  4. Step 4: Simplify right side
    259,488.23x = 28,223,303,119.47
  5. Step 5: Solve for x
    x = 28,223,303,119.47/259,488.23
  6. Step 6: Final answer
    x = 108,765.26

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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.