Home / 278,723,666.56-418,058,469.12-84,636,762.88

Finding the Fourth Proportional to 278,723,666.56, 418,058,469.12 and 84,636,762.88

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Solution

The fourth proportional to 278,723,666.56, 418,058,469.12 and 84,636,762.88 is: 126,946,936.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,723,666.56 : 418,058,469.12 = 84,636,762.88 : x
  2. Step 2: Convert to fraction form
    278,723,666.56/418,058,469.12 = 84,636,762.88/x
  3. Step 3: Cross multiply
    278,723,666.56x = 418,058,469.12 × 84,636,762.88
  4. Step 4: Simplify right side
    278,723,666.56x = 35,383,115,520,885,240
  5. Step 5: Solve for x
    x = 35,383,115,520,885,240/278,723,666.56
  6. Step 6: Final answer
    x = 126,946,936.22

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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.