Home / 208,721.05-288,035.78-113,228.43

Finding the Fourth Proportional to 208,721.05, 288,035.78 and 113,228.43

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Solution

The fourth proportional to 208,721.05, 288,035.78 and 113,228.43 is: 156,255.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,721.05 : 288,035.78 = 113,228.43 : x
  2. Step 2: Convert to fraction form
    208,721.05/288,035.78 = 113,228.43/x
  3. Step 3: Cross multiply
    208,721.05x = 288,035.78 × 113,228.43
  4. Step 4: Simplify right side
    208,721.05x = 32,613,839,153.23
  5. Step 5: Solve for x
    x = 32,613,839,153.23/208,721.05
  6. Step 6: Final answer
    x = 156,255.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.