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Finding the Fourth Proportional to 252,911.70, 379,258.20 and 126,503.10

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Solution

The fourth proportional to 252,911.70, 379,258.20 and 126,503.10 is: 189,699.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,911.70 : 379,258.20 = 126,503.10 : x
  2. Step 2: Convert to fraction form
    252,911.70/379,258.20 = 126,503.10/x
  3. Step 3: Cross multiply
    252,911.70x = 379,258.20 × 126,503.10
  4. Step 4: Simplify right side
    252,911.70x = 47,977,338,000.42
  5. Step 5: Solve for x
    x = 47,977,338,000.42/252,911.70
  6. Step 6: Final answer
    x = 189,699.95

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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.