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Finding the Fourth Proportional to 299,376,040.80, 418,106,090.40 and 299,376,040.80

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Solution

The fourth proportional to 299,376,040.80, 418,106,090.40 and 299,376,040.80 is: 418,106,090.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,376,040.80 : 418,106,090.40 = 299,376,040.80 : x
  2. Step 2: Convert to fraction form
    299,376,040.80/418,106,090.40 = 299,376,040.80/x
  3. Step 3: Cross multiply
    299,376,040.80x = 418,106,090.40 × 299,376,040.80
  4. Step 4: Simplify right side
    299,376,040.80x = 125,170,945,978,318,880
  5. Step 5: Solve for x
    x = 125,170,945,978,318,880/299,376,040.80
  6. Step 6: Final answer
    x = 418,106,090.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.