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Finding the Third Proportional to 55,390,558 and 128,219,112

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Solution

The third proportional to 55,390,558 and 128,219,112 is: 296,804,027.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,390,558 : 128,219,112 = 128,219,112 : x
  2. Step 2: Convert to fraction form
    55,390,558/128,219,112 = 128,219,112/x
  3. Step 3: Cross multiply
    55,390,558x = 128,219,112 × 128,219,112
  4. Step 4: Simplify right side
    55,390,558x = 16,440,140,682,068,544
  5. Step 5: Solve for x
    x = 16,440,140,682,068,544/55,390,558
  6. Step 6: Final answer
    x = 296,804,027.18

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Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.