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Finding the Third Proportional to 76,621,172 and 170,248,454

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Solution

The third proportional to 76,621,172 and 170,248,454 is: 378,283,643.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,621,172 : 170,248,454 = 170,248,454 : x
  2. Step 2: Convert to fraction form
    76,621,172/170,248,454 = 170,248,454/x
  3. Step 3: Cross multiply
    76,621,172x = 170,248,454 × 170,248,454
  4. Step 4: Simplify right side
    76,621,172x = 28,984,536,089,390,116
  5. Step 5: Solve for x
    x = 28,984,536,089,390,116/76,621,172
  6. Step 6: Final answer
    x = 378,283,643.19

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.