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Finding the Fourth Proportional to 279,426,202.80, 419,139,304.20 and 97,654,426.80

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Solution

The fourth proportional to 279,426,202.80, 419,139,304.20 and 97,654,426.80 is: 146,481,640.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,426,202.80 : 419,139,304.20 = 97,654,426.80 : x
  2. Step 2: Convert to fraction form
    279,426,202.80/419,139,304.20 = 97,654,426.80/x
  3. Step 3: Cross multiply
    279,426,202.80x = 419,139,304.20 × 97,654,426.80
  4. Step 4: Simplify right side
    279,426,202.80x = 40,930,808,501,001,832
  5. Step 5: Solve for x
    x = 40,930,808,501,001,832/279,426,202.80
  6. Step 6: Final answer
    x = 146,481,640.20

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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.