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Finding the Third Proportional to 155,938.50 and 243,492.75

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Solution

The third proportional to 155,938.50 and 243,492.75 is: 380,205.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,938.50 : 243,492.75 = 243,492.75 : x
  2. Step 2: Convert to fraction form
    155,938.50/243,492.75 = 243,492.75/x
  3. Step 3: Cross multiply
    155,938.50x = 243,492.75 × 243,492.75
  4. Step 4: Simplify right side
    155,938.50x = 59,288,719,302.56
  5. Step 5: Solve for x
    x = 59,288,719,302.56/155,938.50
  6. Step 6: Final answer
    x = 380,205.78

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.