Home / 268,713.29-403,139.64-79,180.35

Finding the Fourth Proportional to 268,713.29, 403,139.64 and 79,180.35

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Solution

The fourth proportional to 268,713.29, 403,139.64 and 79,180.35 is: 118,791.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,713.29 : 403,139.64 = 79,180.35 : x
  2. Step 2: Convert to fraction form
    268,713.29/403,139.64 = 79,180.35/x
  3. Step 3: Cross multiply
    268,713.29x = 403,139.64 × 79,180.35
  4. Step 4: Simplify right side
    268,713.29x = 31,920,737,794.07
  5. Step 5: Solve for x
    x = 31,920,737,794.07/268,713.29
  6. Step 6: Final answer
    x = 118,791.07

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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.