Home / 214,419.78-321,223.70-143,127.45

Finding the Fourth Proportional to 214,419.78, 321,223.70 and 143,127.45

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Solution

The fourth proportional to 214,419.78, 321,223.70 and 143,127.45 is: 214,420.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,419.78 : 321,223.70 = 143,127.45 : x
  2. Step 2: Convert to fraction form
    214,419.78/321,223.70 = 143,127.45/x
  3. Step 3: Cross multiply
    214,419.78x = 321,223.70 × 143,127.45
  4. Step 4: Simplify right side
    214,419.78x = 45,975,929,418.38
  5. Step 5: Solve for x
    x = 45,975,929,418.38/214,419.78
  6. Step 6: Final answer
    x = 214,420.19

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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.