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Finding the Third Proportional to 133,515 and 310,459.50

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Solution

The third proportional to 133,515 and 310,459.50 is: 721,904.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,515 : 310,459.50 = 310,459.50 : x
  2. Step 2: Convert to fraction form
    133,515/310,459.50 = 310,459.50/x
  3. Step 3: Cross multiply
    133,515x = 310,459.50 × 310,459.50
  4. Step 4: Simplify right side
    133,515x = 96,385,101,140.25
  5. Step 5: Solve for x
    x = 96,385,101,140.25/133,515
  6. Step 6: Final answer
    x = 721,904.66

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Why These Related Problems?

These problems maintain the same ratio (2.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.