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Finding the Fourth Proportional to 208,418.52, 287,617.82 and 112,925.22

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Solution

The fourth proportional to 208,418.52, 287,617.82 and 112,925.22 is: 155,836.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,418.52 : 287,617.82 = 112,925.22 : x
  2. Step 2: Convert to fraction form
    208,418.52/287,617.82 = 112,925.22/x
  3. Step 3: Cross multiply
    208,418.52x = 287,617.82 × 112,925.22
  4. Step 4: Simplify right side
    208,418.52x = 32,479,305,034.79
  5. Step 5: Solve for x
    x = 32,479,305,034.79/208,418.52
  6. Step 6: Final answer
    x = 155,836.94

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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.