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Finding the Fourth Proportional to 208,312.73, 312,458.65 and 73,383.49

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Solution

The fourth proportional to 208,312.73, 312,458.65 and 73,383.49 is: 110,071.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,312.73 : 312,458.65 = 73,383.49 : x
  2. Step 2: Convert to fraction form
    208,312.73/312,458.65 = 73,383.49/x
  3. Step 3: Cross multiply
    208,312.73x = 312,458.65 × 73,383.49
  4. Step 4: Simplify right side
    208,312.73x = 22,929,306,217.69
  5. Step 5: Solve for x
    x = 22,929,306,217.69/208,312.73
  6. Step 6: Final answer
    x = 110,071.56

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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.