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Finding the Third Proportional to 155,031 and 316,641

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Solution

The third proportional to 155,031 and 316,641 is: 646,719.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,031 : 316,641 = 316,641 : x
  2. Step 2: Convert to fraction form
    155,031/316,641 = 316,641/x
  3. Step 3: Cross multiply
    155,031x = 316,641 × 316,641
  4. Step 4: Simplify right side
    155,031x = 100,261,522,881
  5. Step 5: Solve for x
    x = 100,261,522,881/155,031
  6. Step 6: Final answer
    x = 646,719.19

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.