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Finding the Third Proportional to 55,390,554 and 128,219,103

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Solution

The third proportional to 55,390,554 and 128,219,103 is: 296,804,006.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,390,554 : 128,219,103 = 128,219,103 : x
  2. Step 2: Convert to fraction form
    55,390,554/128,219,103 = 128,219,103/x
  3. Step 3: Cross multiply
    55,390,554x = 128,219,103 × 128,219,103
  4. Step 4: Simplify right side
    55,390,554x = 16,440,138,374,124,608
  5. Step 5: Solve for x
    x = 16,440,138,374,124,608/55,390,554
  6. Step 6: Final answer
    x = 296,804,006.95

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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.