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Finding the Third Proportional to 129,388,752 and 278,507,241

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Solution

The third proportional to 129,388,752 and 278,507,241 is: 599,482,428.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,388,752 : 278,507,241 = 278,507,241 : x
  2. Step 2: Convert to fraction form
    129,388,752/278,507,241 = 278,507,241/x
  3. Step 3: Cross multiply
    129,388,752x = 278,507,241 × 278,507,241
  4. Step 4: Simplify right side
    129,388,752x = 77,566,283,289,432,080
  5. Step 5: Solve for x
    x = 77,566,283,289,432,080/129,388,752
  6. Step 6: Final answer
    x = 599,482,428.65

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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.