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Finding the Third Proportional to 213,948.50 and 288,160.50

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Solution

The third proportional to 213,948.50 and 288,160.50 is: 388,114.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,948.50 : 288,160.50 = 288,160.50 : x
  2. Step 2: Convert to fraction form
    213,948.50/288,160.50 = 288,160.50/x
  3. Step 3: Cross multiply
    213,948.50x = 288,160.50 × 288,160.50
  4. Step 4: Simplify right side
    213,948.50x = 83,036,473,760.25
  5. Step 5: Solve for x
    x = 83,036,473,760.25/213,948.50
  6. Step 6: Final answer
    x = 388,114.31

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.