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Finding the Fourth Proportional to 253,346.70, 379,910.70 and 126,938.10

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Solution

The fourth proportional to 253,346.70, 379,910.70 and 126,938.10 is: 190,352.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,346.70 : 379,910.70 = 126,938.10 : x
  2. Step 2: Convert to fraction form
    253,346.70/379,910.70 = 126,938.10/x
  3. Step 3: Cross multiply
    253,346.70x = 379,910.70 × 126,938.10
  4. Step 4: Simplify right side
    253,346.70x = 48,225,142,427.67
  5. Step 5: Solve for x
    x = 48,225,142,427.67/253,346.70
  6. Step 6: Final answer
    x = 190,352.36

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1.5x scale

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.