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Finding the Third Proportional to 252,076.50 and 390,507.75

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Solution

The third proportional to 252,076.50 and 390,507.75 is: 604,960.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,076.50 : 390,507.75 = 390,507.75 : x
  2. Step 2: Convert to fraction form
    252,076.50/390,507.75 = 390,507.75/x
  3. Step 3: Cross multiply
    252,076.50x = 390,507.75 × 390,507.75
  4. Step 4: Simplify right side
    252,076.50x = 152,496,302,810.06
  5. Step 5: Solve for x
    x = 152,496,302,810.06/252,076.50
  6. Step 6: Final answer
    x = 604,960.41

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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.