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Finding the Fourth Proportional to 108,308.40, 162,433.80 and 33,428.40

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Solution

The fourth proportional to 108,308.40, 162,433.80 and 33,428.40 is: 50,133.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,308.40 : 162,433.80 = 33,428.40 : x
  2. Step 2: Convert to fraction form
    108,308.40/162,433.80 = 33,428.40/x
  3. Step 3: Cross multiply
    108,308.40x = 162,433.80 × 33,428.40
  4. Step 4: Simplify right side
    108,308.40x = 5,429,902,039.92
  5. Step 5: Solve for x
    x = 5,429,902,039.92/108,308.40
  6. Step 6: Final answer
    x = 50,133.71

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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.