Home / 279,291.29-418,608.86-129,214.59

Finding the Fourth Proportional to 279,291.29, 418,608.86 and 129,214.59

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Solution

The fourth proportional to 279,291.29, 418,608.86 and 129,214.59 is: 193,670.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,291.29 : 418,608.86 = 129,214.59 : x
  2. Step 2: Convert to fraction form
    279,291.29/418,608.86 = 129,214.59/x
  3. Step 3: Cross multiply
    279,291.29x = 418,608.86 × 129,214.59
  4. Step 4: Simplify right side
    279,291.29x = 54,090,373,080.92
  5. Step 5: Solve for x
    x = 54,090,373,080.92/279,291.29
  6. Step 6: Final answer
    x = 193,670.10

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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.