Home / 212,412,392.80-318,618,589.20-155,016,764.80

Finding the Fourth Proportional to 212,412,392.80, 318,618,589.20 and 155,016,764.80

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Solution

The fourth proportional to 212,412,392.80, 318,618,589.20 and 155,016,764.80 is: 232,525,147.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,412,392.80 : 318,618,589.20 = 155,016,764.80 : x
  2. Step 2: Convert to fraction form
    212,412,392.80/318,618,589.20 = 155,016,764.80/x
  3. Step 3: Cross multiply
    212,412,392.80x = 318,618,589.20 × 155,016,764.80
  4. Step 4: Simplify right side
    212,412,392.80x = 49,391,222,902,924,224
  5. Step 5: Solve for x
    x = 49,391,222,902,924,224/212,412,392.80
  6. Step 6: Final answer
    x = 232,525,147.20

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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.