Home / 290,333,074.56-400,390,515.30-211,892,380.80

Finding the Fourth Proportional to 290,333,074.56, 400,390,515.30 and 211,892,380.80

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Solution

The fourth proportional to 290,333,074.56, 400,390,515.30 and 211,892,380.80 is: 292,215,069.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,333,074.56 : 400,390,515.30 = 211,892,380.80 : x
  2. Step 2: Convert to fraction form
    290,333,074.56/400,390,515.30 = 211,892,380.80/x
  3. Step 3: Cross multiply
    290,333,074.56x = 400,390,515.30 × 211,892,380.80
  4. Step 4: Simplify right side
    290,333,074.56x = 84,839,699,536,655,840
  5. Step 5: Solve for x
    x = 84,839,699,536,655,840/290,333,074.56
  6. Step 6: Final answer
    x = 292,215,069.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.