Home / 279,947.21-420,083.21-117,829.15

Finding the Fourth Proportional to 279,947.21, 420,083.21 and 117,829.15

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Solution

The fourth proportional to 279,947.21, 420,083.21 and 117,829.15 is: 176,812.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,947.21 : 420,083.21 = 117,829.15 : x
  2. Step 2: Convert to fraction form
    279,947.21/420,083.21 = 117,829.15/x
  3. Step 3: Cross multiply
    279,947.21x = 420,083.21 × 117,829.15
  4. Step 4: Simplify right side
    279,947.21x = 49,498,046,807.94
  5. Step 5: Solve for x
    x = 49,498,046,807.94/279,947.21
  6. Step 6: Final answer
    x = 176,812.08

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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.