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Finding the Third Proportional to 128,051,930.25 and 275,525,291.25

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Solution

The third proportional to 128,051,930.25 and 275,525,291.25 is: 592,839,061.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,051,930.25 : 275,525,291.25 = 275,525,291.25 : x
  2. Step 2: Convert to fraction form
    128,051,930.25/275,525,291.25 = 275,525,291.25/x
  3. Step 3: Cross multiply
    128,051,930.25x = 275,525,291.25 × 275,525,291.25
  4. Step 4: Simplify right side
    128,051,930.25x = 75,914,186,118,397,328
  5. Step 5: Solve for x
    x = 75,914,186,118,397,328/128,051,930.25
  6. Step 6: Final answer
    x = 592,839,061.23

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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.