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Finding the Fourth Proportional to 272,493.88, 408,768.70 and 104,155.90

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Solution

The fourth proportional to 272,493.88, 408,768.70 and 104,155.90 is: 156,244.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,493.88 : 408,768.70 = 104,155.90 : x
  2. Step 2: Convert to fraction form
    272,493.88/408,768.70 = 104,155.90/x
  3. Step 3: Cross multiply
    272,493.88x = 408,768.70 × 104,155.90
  4. Step 4: Simplify right side
    272,493.88x = 42,575,671,840.33
  5. Step 5: Solve for x
    x = 42,575,671,840.33/272,493.88
  6. Step 6: Final answer
    x = 156,244.51

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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.