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Finding the Third Proportional to 131,658 and 288,405

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Solution

The third proportional to 131,658 and 288,405 is: 631,769.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,658 : 288,405 = 288,405 : x
  2. Step 2: Convert to fraction form
    131,658/288,405 = 288,405/x
  3. Step 3: Cross multiply
    131,658x = 288,405 × 288,405
  4. Step 4: Simplify right side
    131,658x = 83,177,444,025
  5. Step 5: Solve for x
    x = 83,177,444,025/131,658
  6. Step 6: Final answer
    x = 631,769.01

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.