Home / 279,963,669.15-419,945,503.73-256,155,112.35

Finding the Fourth Proportional to 279,963,669.15, 419,945,503.73 and 256,155,112.35

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Solution

The fourth proportional to 279,963,669.15, 419,945,503.73 and 256,155,112.35 is: 384,232,668.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,963,669.15 : 419,945,503.73 = 256,155,112.35 : x
  2. Step 2: Convert to fraction form
    279,963,669.15/419,945,503.73 = 256,155,112.35/x
  3. Step 3: Cross multiply
    279,963,669.15x = 419,945,503.73 × 256,155,112.35
  4. Step 4: Simplify right side
    279,963,669.15x = 107,571,187,687,554,720
  5. Step 5: Solve for x
    x = 107,571,187,687,554,720/279,963,669.15
  6. Step 6: Final answer
    x = 384,232,668.53

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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.