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Finding the Fourth Proportional to 279,009.46, 418,451.14 and 79,325.47

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Solution

The fourth proportional to 279,009.46, 418,451.14 and 79,325.47 is: 118,970.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,009.46 : 418,451.14 = 79,325.47 : x
  2. Step 2: Convert to fraction form
    279,009.46/418,451.14 = 79,325.47/x
  3. Step 3: Cross multiply
    279,009.46x = 418,451.14 × 79,325.47
  4. Step 4: Simplify right side
    279,009.46x = 33,193,833,352.54
  5. Step 5: Solve for x
    x = 33,193,833,352.54/279,009.46
  6. Step 6: Final answer
    x = 118,970.28

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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.