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Finding the Fourth Proportional to 442,667,369.70, 664,001,054.55 and 310,657,425.30

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Solution

The fourth proportional to 442,667,369.70, 664,001,054.55 and 310,657,425.30 is: 465,986,137.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,667,369.70 : 664,001,054.55 = 310,657,425.30 : x
  2. Step 2: Convert to fraction form
    442,667,369.70/664,001,054.55 = 310,657,425.30/x
  3. Step 3: Cross multiply
    442,667,369.70x = 664,001,054.55 × 310,657,425.30
  4. Step 4: Simplify right side
    442,667,369.70x = 206,276,858,002,987,840
  5. Step 5: Solve for x
    x = 206,276,858,002,987,840/442,667,369.70
  6. Step 6: Final answer
    x = 465,986,137.95

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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.