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Finding the Fourth Proportional to 273,354.20, 409,836.90 and 104,809.40

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Solution

The fourth proportional to 273,354.20, 409,836.90 and 104,809.40 is: 157,139.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,354.20 : 409,836.90 = 104,809.40 : x
  2. Step 2: Convert to fraction form
    273,354.20/409,836.90 = 104,809.40/x
  3. Step 3: Cross multiply
    273,354.20x = 409,836.90 × 104,809.40
  4. Step 4: Simplify right side
    273,354.20x = 42,954,759,586.86
  5. Step 5: Solve for x
    x = 42,954,759,586.86/273,354.20
  6. Step 6: Final answer
    x = 157,139.56

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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.