Home / 279,937,512.80-420,116,221.20-143,552,693.60

Finding the Fourth Proportional to 279,937,512.80, 420,116,221.20 and 143,552,693.60

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Solution

The fourth proportional to 279,937,512.80, 420,116,221.20 and 143,552,693.60 is: 215,436,704.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,937,512.80 : 420,116,221.20 = 143,552,693.60 : x
  2. Step 2: Convert to fraction form
    279,937,512.80/420,116,221.20 = 143,552,693.60/x
  3. Step 3: Cross multiply
    279,937,512.80x = 420,116,221.20 × 143,552,693.60
  4. Step 4: Simplify right side
    279,937,512.80x = 60,308,815,178,313,424
  5. Step 5: Solve for x
    x = 60,308,815,178,313,424/279,937,512.80
  6. Step 6: Final answer
    x = 215,436,704.34

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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.