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Finding the Fourth Proportional to 279,068.04, 418,603.68 and 68,704.56

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Solution

The fourth proportional to 279,068.04, 418,603.68 and 68,704.56 is: 103,057.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,068.04 : 418,603.68 = 68,704.56 : x
  2. Step 2: Convert to fraction form
    279,068.04/418,603.68 = 68,704.56/x
  3. Step 3: Cross multiply
    279,068.04x = 418,603.68 × 68,704.56
  4. Step 4: Simplify right side
    279,068.04x = 28,759,981,648.78
  5. Step 5: Solve for x
    x = 28,759,981,648.78/279,068.04
  6. Step 6: Final answer
    x = 103,057.24

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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.