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Finding the Third Proportional to 163,729 and 253,585.50

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Solution

The third proportional to 163,729 and 253,585.50 is: 392,756.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,729 : 253,585.50 = 253,585.50 : x
  2. Step 2: Convert to fraction form
    163,729/253,585.50 = 253,585.50/x
  3. Step 3: Cross multiply
    163,729x = 253,585.50 × 253,585.50
  4. Step 4: Simplify right side
    163,729x = 64,305,605,810.25
  5. Step 5: Solve for x
    x = 64,305,605,810.25/163,729
  6. Step 6: Final answer
    x = 392,756.36

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.