Home / 259,222.20-388,796.39-81,706.14

Finding the Fourth Proportional to 259,222.20, 388,796.39 and 81,706.14

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Solution

The fourth proportional to 259,222.20, 388,796.39 and 81,706.14 is: 122,547.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,222.20 : 388,796.39 = 81,706.14 : x
  2. Step 2: Convert to fraction form
    259,222.20/388,796.39 = 81,706.14/x
  3. Step 3: Cross multiply
    259,222.20x = 388,796.39 × 81,706.14
  4. Step 4: Simplify right side
    259,222.20x = 31,767,051,864.30
  5. Step 5: Solve for x
    x = 31,767,051,864.30/259,222.20
  6. Step 6: Final answer
    x = 122,547.57

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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.