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Finding the Fourth Proportional to 279,068.92, 418,599.96 and 68,708.68

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Solution

The fourth proportional to 279,068.92, 418,599.96 and 68,708.68 is: 103,062.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,068.92 : 418,599.96 = 68,708.68 : x
  2. Step 2: Convert to fraction form
    279,068.92/418,599.96 = 68,708.68/x
  3. Step 3: Cross multiply
    279,068.92x = 418,599.96 × 68,708.68
  4. Step 4: Simplify right side
    279,068.92x = 28,761,450,699.65
  5. Step 5: Solve for x
    x = 28,761,450,699.65/279,068.92
  6. Step 6: Final answer
    x = 103,062.18

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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.