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Finding the Third Proportional to 135,090 and 312,735

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Solution

The third proportional to 135,090 and 312,735 is: 723,985.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,090 : 312,735 = 312,735 : x
  2. Step 2: Convert to fraction form
    135,090/312,735 = 312,735/x
  3. Step 3: Cross multiply
    135,090x = 312,735 × 312,735
  4. Step 4: Simplify right side
    135,090x = 97,803,180,225
  5. Step 5: Solve for x
    x = 97,803,180,225/135,090
  6. Step 6: Final answer
    x = 723,985.34

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Why These Related Problems?

These problems maintain the same ratio (2.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.