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Finding the Third Proportional to 117,220,458 and 172,318,515

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Solution

The third proportional to 117,220,458 and 172,318,515 is: 253,314,746.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,220,458 : 172,318,515 = 172,318,515 : x
  2. Step 2: Convert to fraction form
    117,220,458/172,318,515 = 172,318,515/x
  3. Step 3: Cross multiply
    117,220,458x = 172,318,515 × 172,318,515
  4. Step 4: Simplify right side
    117,220,458x = 29,693,670,611,805,224
  5. Step 5: Solve for x
    x = 29,693,670,611,805,224/117,220,458
  6. Step 6: Final answer
    x = 253,314,746.58

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.