Home / 220,935.40-331,403.10-121,402.60

Finding the Fourth Proportional to 220,935.40, 331,403.10 and 121,402.60

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Solution

The fourth proportional to 220,935.40, 331,403.10 and 121,402.60 is: 182,103.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,935.40 : 331,403.10 = 121,402.60 : x
  2. Step 2: Convert to fraction form
    220,935.40/331,403.10 = 121,402.60/x
  3. Step 3: Cross multiply
    220,935.40x = 331,403.10 × 121,402.60
  4. Step 4: Simplify right side
    220,935.40x = 40,233,197,988.06
  5. Step 5: Solve for x
    x = 40,233,197,988.06/220,935.40
  6. Step 6: Final answer
    x = 182,103.90

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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.