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Finding the Fourth Proportional to 299,563,693.80, 449,345,540.70 and 245,144,135.40

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Solution

The fourth proportional to 299,563,693.80, 449,345,540.70 and 245,144,135.40 is: 367,716,203.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,563,693.80 : 449,345,540.70 = 245,144,135.40 : x
  2. Step 2: Convert to fraction form
    299,563,693.80/449,345,540.70 = 245,144,135.40/x
  3. Step 3: Cross multiply
    299,563,693.80x = 449,345,540.70 × 245,144,135.40
  4. Step 4: Simplify right side
    299,563,693.80x = 110,154,424,070,747,008
  5. Step 5: Solve for x
    x = 110,154,424,070,747,008/299,563,693.80
  6. Step 6: Final answer
    x = 367,716,203.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.