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Finding the Third Proportional to 315,560.25 and 431,122.50

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Solution

The third proportional to 315,560.25 and 431,122.50 is: 589,005.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,560.25 : 431,122.50 = 431,122.50 : x
  2. Step 2: Convert to fraction form
    315,560.25/431,122.50 = 431,122.50/x
  3. Step 3: Cross multiply
    315,560.25x = 431,122.50 × 431,122.50
  4. Step 4: Simplify right side
    315,560.25x = 185,866,610,006.25
  5. Step 5: Solve for x
    x = 185,866,610,006.25/315,560.25
  6. Step 6: Final answer
    x = 589,005.14

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.