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Finding the Fourth Proportional to 221,851, 332,829.06 and 72,091.72

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Solution

The fourth proportional to 221,851, 332,829.06 and 72,091.72 is: 108,154.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,851 : 332,829.06 = 72,091.72 : x
  2. Step 2: Convert to fraction form
    221,851/332,829.06 = 72,091.72/x
  3. Step 3: Cross multiply
    221,851x = 332,829.06 × 72,091.72
  4. Step 4: Simplify right side
    221,851x = 23,994,219,401.38
  5. Step 5: Solve for x
    x = 23,994,219,401.38/221,851
  6. Step 6: Final answer
    x = 108,154.66

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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.