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Finding the Fourth Proportional to 272,493.87, 408,768.69 and 104,155.89

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Solution

The fourth proportional to 272,493.87, 408,768.69 and 104,155.89 is: 156,244.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,493.87 : 408,768.69 = 104,155.89 : x
  2. Step 2: Convert to fraction form
    272,493.87/408,768.69 = 104,155.89/x
  3. Step 3: Cross multiply
    272,493.87x = 408,768.69 × 104,155.89
  4. Step 4: Simplify right side
    272,493.87x = 42,575,666,711.08
  5. Step 5: Solve for x
    x = 42,575,666,711.08/272,493.87
  6. Step 6: Final answer
    x = 156,244.49

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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.