Home / 214,420.53-321,224.82-143,128.20

Finding the Fourth Proportional to 214,420.53, 321,224.82 and 143,128.20

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Solution

The fourth proportional to 214,420.53, 321,224.82 and 143,128.20 is: 214,421.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,420.53 : 321,224.82 = 143,128.20 : x
  2. Step 2: Convert to fraction form
    214,420.53/321,224.82 = 143,128.20/x
  3. Step 3: Cross multiply
    214,420.53x = 321,224.82 × 143,128.20
  4. Step 4: Simplify right side
    214,420.53x = 45,976,330,281.92
  5. Step 5: Solve for x
    x = 45,976,330,281.92/214,420.53
  6. Step 6: Final answer
    x = 214,421.31

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1.5x scale

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.