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Finding the Third Proportional to 139,791,410 and 208,474,860

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Solution

The third proportional to 139,791,410 and 208,474,860 is: 310,904,420.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,791,410 : 208,474,860 = 208,474,860 : x
  2. Step 2: Convert to fraction form
    139,791,410/208,474,860 = 208,474,860/x
  3. Step 3: Cross multiply
    139,791,410x = 208,474,860 × 208,474,860
  4. Step 4: Simplify right side
    139,791,410x = 43,461,767,252,019,600
  5. Step 5: Solve for x
    x = 43,461,767,252,019,600/139,791,410
  6. Step 6: Final answer
    x = 310,904,420.04

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.