Home / 279,603.45-419,373.79-77,228.33

Finding the Fourth Proportional to 279,603.45, 419,373.79 and 77,228.33

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Solution

The fourth proportional to 279,603.45, 419,373.79 and 77,228.33 is: 115,833.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,603.45 : 419,373.79 = 77,228.33 : x
  2. Step 2: Convert to fraction form
    279,603.45/419,373.79 = 77,228.33/x
  3. Step 3: Cross multiply
    279,603.45x = 419,373.79 × 77,228.33
  4. Step 4: Simplify right side
    279,603.45x = 32,387,535,157.53
  5. Step 5: Solve for x
    x = 32,387,535,157.53/279,603.45
  6. Step 6: Final answer
    x = 115,833.82

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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.