Home / 214,258.40-321,428.21-86,184.48

Finding the Fourth Proportional to 214,258.40, 321,428.21 and 86,184.48

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Solution

The fourth proportional to 214,258.40, 321,428.21 and 86,184.48 is: 129,293.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,258.40 : 321,428.21 = 86,184.48 : x
  2. Step 2: Convert to fraction form
    214,258.40/321,428.21 = 86,184.48/x
  3. Step 3: Cross multiply
    214,258.40x = 321,428.21 × 86,184.48
  4. Step 4: Simplify right side
    214,258.40x = 27,702,123,136.18
  5. Step 5: Solve for x
    x = 27,702,123,136.18/214,258.40
  6. Step 6: Final answer
    x = 129,293.06

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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.