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Finding the Fourth Proportional to 279,795.47, 419,569.74 and 80,070.39

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Solution

The fourth proportional to 279,795.47, 419,569.74 and 80,070.39 is: 120,070.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,795.47 : 419,569.74 = 80,070.39 : x
  2. Step 2: Convert to fraction form
    279,795.47/419,569.74 = 80,070.39/x
  3. Step 3: Cross multiply
    279,795.47x = 419,569.74 × 80,070.39
  4. Step 4: Simplify right side
    279,795.47x = 33,595,112,714.00
  5. Step 5: Solve for x
    x = 33,595,112,714.00/279,795.47
  6. Step 6: Final answer
    x = 120,070.25

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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.