Home / 208,215.30-287,336.75-112,721.97

Finding the Fourth Proportional to 208,215.30, 287,336.75 and 112,721.97

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Solution

The fourth proportional to 208,215.30, 287,336.75 and 112,721.97 is: 155,556.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,215.30 : 287,336.75 = 112,721.97 : x
  2. Step 2: Convert to fraction form
    208,215.30/287,336.75 = 112,721.97/x
  3. Step 3: Cross multiply
    208,215.30x = 287,336.75 × 112,721.97
  4. Step 4: Simplify right side
    208,215.30x = 32,389,164,795.20
  5. Step 5: Solve for x
    x = 32,389,164,795.20/208,215.30
  6. Step 6: Final answer
    x = 155,556.12

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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.