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Finding the Third Proportional to 71,431,242 and 155,039,700

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Solution

The third proportional to 71,431,242 and 155,039,700 is: 336,509,738.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,431,242 : 155,039,700 = 155,039,700 : x
  2. Step 2: Convert to fraction form
    71,431,242/155,039,700 = 155,039,700/x
  3. Step 3: Cross multiply
    71,431,242x = 155,039,700 × 155,039,700
  4. Step 4: Simplify right side
    71,431,242x = 24,037,308,576,090,000
  5. Step 5: Solve for x
    x = 24,037,308,576,090,000/71,431,242
  6. Step 6: Final answer
    x = 336,509,738.64

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.