Home / 279,790.04-419,356.31-129,714.46

Finding the Fourth Proportional to 279,790.04, 419,356.31 and 129,714.46

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Solution

The fourth proportional to 279,790.04, 419,356.31 and 129,714.46 is: 194,419.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,790.04 : 419,356.31 = 129,714.46 : x
  2. Step 2: Convert to fraction form
    279,790.04/419,356.31 = 129,714.46/x
  3. Step 3: Cross multiply
    279,790.04x = 419,356.31 × 129,714.46
  4. Step 4: Simplify right side
    279,790.04x = 54,396,575,602.28
  5. Step 5: Solve for x
    x = 54,396,575,602.28/279,790.04
  6. Step 6: Final answer
    x = 194,419.27

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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.