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Finding the Fourth Proportional to 297,713,927.70, 446,570,891.55 and 215,446,860.90

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Solution

The fourth proportional to 297,713,927.70, 446,570,891.55 and 215,446,860.90 is: 323,170,291.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,713,927.70 : 446,570,891.55 = 215,446,860.90 : x
  2. Step 2: Convert to fraction form
    297,713,927.70/446,570,891.55 = 215,446,860.90/x
  3. Step 3: Cross multiply
    297,713,927.70x = 446,570,891.55 × 215,446,860.90
  4. Step 4: Simplify right side
    297,713,927.70x = 96,212,296,753,761,840
  5. Step 5: Solve for x
    x = 96,212,296,753,761,840/297,713,927.70
  6. Step 6: Final answer
    x = 323,170,291.35

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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.