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Finding the Third Proportional to 120,632.25 and 257,827.50

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Solution

The third proportional to 120,632.25 and 257,827.50 is: 551,055.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,632.25 : 257,827.50 = 257,827.50 : x
  2. Step 2: Convert to fraction form
    120,632.25/257,827.50 = 257,827.50/x
  3. Step 3: Cross multiply
    120,632.25x = 257,827.50 × 257,827.50
  4. Step 4: Simplify right side
    120,632.25x = 66,475,019,756.25
  5. Step 5: Solve for x
    x = 66,475,019,756.25/120,632.25
  6. Step 6: Final answer
    x = 551,055.13

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.