Home / 279,480.08-418,846.20-137,107.28

Finding the Fourth Proportional to 279,480.08, 418,846.20 and 137,107.28

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Solution

The fourth proportional to 279,480.08, 418,846.20 and 137,107.28 is: 205,477.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,480.08 : 418,846.20 = 137,107.28 : x
  2. Step 2: Convert to fraction form
    279,480.08/418,846.20 = 137,107.28/x
  3. Step 3: Cross multiply
    279,480.08x = 418,846.20 × 137,107.28
  4. Step 4: Simplify right side
    279,480.08x = 57,426,863,220.34
  5. Step 5: Solve for x
    x = 57,426,863,220.34/279,480.08
  6. Step 6: Final answer
    x = 205,477.48

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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.