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Finding the Third Proportional to 254,307 and 393,418.88

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Solution

The third proportional to 254,307 and 393,418.88 is: 608,628.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,307 : 393,418.88 = 393,418.88 : x
  2. Step 2: Convert to fraction form
    254,307/393,418.88 = 393,418.88/x
  3. Step 3: Cross multiply
    254,307x = 393,418.88 × 393,418.88
  4. Step 4: Simplify right side
    254,307x = 154,778,411,206.27
  5. Step 5: Solve for x
    x = 154,778,411,206.27/254,307
  6. Step 6: Final answer
    x = 608,628.20

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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.