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Finding the Fourth Proportional to 203,354.43, 304,828.62 and 70,149.72

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Solution

The fourth proportional to 203,354.43, 304,828.62 and 70,149.72 is: 105,154.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,354.43 : 304,828.62 = 70,149.72 : x
  2. Step 2: Convert to fraction form
    203,354.43/304,828.62 = 70,149.72/x
  3. Step 3: Cross multiply
    203,354.43x = 304,828.62 × 70,149.72
  4. Step 4: Simplify right side
    203,354.43x = 21,383,642,340.99
  5. Step 5: Solve for x
    x = 21,383,642,340.99/203,354.43
  6. Step 6: Final answer
    x = 105,154.54

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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.