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Finding the Third Proportional to 55,390,562 and 128,219,122

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Solution

The third proportional to 55,390,562 and 128,219,122 is: 296,804,052.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,390,562 : 128,219,122 = 128,219,122 : x
  2. Step 2: Convert to fraction form
    55,390,562/128,219,122 = 128,219,122/x
  3. Step 3: Cross multiply
    55,390,562x = 128,219,122 × 128,219,122
  4. Step 4: Simplify right side
    55,390,562x = 16,440,143,246,450,884
  5. Step 5: Solve for x
    x = 16,440,143,246,450,884/55,390,562
  6. Step 6: Final answer
    x = 296,804,052.04

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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.