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Finding the Fourth Proportional to 206,721.25, 310,053.59 and 56,940.00

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Solution

The fourth proportional to 206,721.25, 310,053.59 and 56,940.00 is: 85,402.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,721.25 : 310,053.59 = 56,940.00 : x
  2. Step 2: Convert to fraction form
    206,721.25/310,053.59 = 56,940.00/x
  3. Step 3: Cross multiply
    206,721.25x = 310,053.59 × 56,940.00
  4. Step 4: Simplify right side
    206,721.25x = 17,654,450,180.72
  5. Step 5: Solve for x
    x = 17,654,450,180.72/206,721.25
  6. Step 6: Final answer
    x = 85,402.20

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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.