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Finding the Fourth Proportional to 279,038.04, 418,558.68 and 68,674.56

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Solution

The fourth proportional to 279,038.04, 418,558.68 and 68,674.56 is: 103,012.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,038.04 : 418,558.68 = 68,674.56 : x
  2. Step 2: Convert to fraction form
    279,038.04/418,558.68 = 68,674.56/x
  3. Step 3: Cross multiply
    279,038.04x = 418,558.68 × 68,674.56
  4. Step 4: Simplify right side
    279,038.04x = 28,744,333,183.18
  5. Step 5: Solve for x
    x = 28,744,333,183.18/279,038.04
  6. Step 6: Final answer
    x = 103,012.24

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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.