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Finding the Third Proportional to 64,724,408 and 139,054,120

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Solution

The third proportional to 64,724,408 and 139,054,120 is: 298,744,305.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,724,408 : 139,054,120 = 139,054,120 : x
  2. Step 2: Convert to fraction form
    64,724,408/139,054,120 = 139,054,120/x
  3. Step 3: Cross multiply
    64,724,408x = 139,054,120 × 139,054,120
  4. Step 4: Simplify right side
    64,724,408x = 19,336,048,288,974,400
  5. Step 5: Solve for x
    x = 19,336,048,288,974,400/64,724,408
  6. Step 6: Final answer
    x = 298,744,305.07

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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.