Home / 259,308.16-388,335.20-214,605.84

Finding the Fourth Proportional to 259,308.16, 388,335.20 and 214,605.84

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Solution

The fourth proportional to 259,308.16, 388,335.20 and 214,605.84 is: 321,389.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,308.16 : 388,335.20 = 214,605.84 : x
  2. Step 2: Convert to fraction form
    259,308.16/388,335.20 = 214,605.84/x
  3. Step 3: Cross multiply
    259,308.16x = 388,335.20 × 214,605.84
  4. Step 4: Simplify right side
    259,308.16x = 83,339,001,797.57
  5. Step 5: Solve for x
    x = 83,339,001,797.57/259,308.16
  6. Step 6: Final answer
    x = 321,389.82

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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.