Home / 283,214.75-390,838.97-155,891.25

Finding the Fourth Proportional to 283,214.75, 390,838.97 and 155,891.25

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Solution

The fourth proportional to 283,214.75, 390,838.97 and 155,891.25 is: 215,131.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,214.75 : 390,838.97 = 155,891.25 : x
  2. Step 2: Convert to fraction form
    283,214.75/390,838.97 = 155,891.25/x
  3. Step 3: Cross multiply
    283,214.75x = 390,838.97 × 155,891.25
  4. Step 4: Simplify right side
    283,214.75x = 60,928,375,971.74
  5. Step 5: Solve for x
    x = 60,928,375,971.74/283,214.75
  6. Step 6: Final answer
    x = 215,131.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.