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Finding the Fourth Proportional to 279,034.17, 418,551.27 and 68,672.12

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Solution

The fourth proportional to 279,034.17, 418,551.27 and 68,672.12 is: 103,008.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,034.17 : 418,551.27 = 68,672.12 : x
  2. Step 2: Convert to fraction form
    279,034.17/418,551.27 = 68,672.12/x
  3. Step 3: Cross multiply
    279,034.17x = 418,551.27 × 68,672.12
  4. Step 4: Simplify right side
    279,034.17x = 28,742,800,946.84
  5. Step 5: Solve for x
    x = 28,742,800,946.84/279,034.17
  6. Step 6: Final answer
    x = 103,008.18

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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.