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Finding the Third Proportional to 216,899,061 and 330,430,815

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Solution

The third proportional to 216,899,061 and 330,430,815 is: 503,388,640.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,899,061 : 330,430,815 = 330,430,815 : x
  2. Step 2: Convert to fraction form
    216,899,061/330,430,815 = 330,430,815/x
  3. Step 3: Cross multiply
    216,899,061x = 330,430,815 × 330,430,815
  4. Step 4: Simplify right side
    216,899,061x = 109,184,523,501,564,224
  5. Step 5: Solve for x
    x = 109,184,523,501,564,224/216,899,061
  6. Step 6: Final answer
    x = 503,388,640.77

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.