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Finding the Third Proportional to 254,355.75 and 393,666.75

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Solution

The third proportional to 254,355.75 and 393,666.75 is: 609,278.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,355.75 : 393,666.75 = 393,666.75 : x
  2. Step 2: Convert to fraction form
    254,355.75/393,666.75 = 393,666.75/x
  3. Step 3: Cross multiply
    254,355.75x = 393,666.75 × 393,666.75
  4. Step 4: Simplify right side
    254,355.75x = 154,973,510,055.56
  5. Step 5: Solve for x
    x = 154,973,510,055.56/254,355.75
  6. Step 6: Final answer
    x = 609,278.58

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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.