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Finding the Third Proportional to 119,791,390 and 257,740,351

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Solution

The third proportional to 119,791,390 and 257,740,351 is: 554,548,106.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,791,390 : 257,740,351 = 257,740,351 : x
  2. Step 2: Convert to fraction form
    119,791,390/257,740,351 = 257,740,351/x
  3. Step 3: Cross multiply
    119,791,390x = 257,740,351 × 257,740,351
  4. Step 4: Simplify right side
    119,791,390x = 66,430,088,533,603,200
  5. Step 5: Solve for x
    x = 66,430,088,533,603,200/119,791,390
  6. Step 6: Final answer
    x = 554,548,106.78

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.