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Finding the Fourth Proportional to 276,403.53, 414,607.62 and 76,739.49

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Solution

The fourth proportional to 276,403.53, 414,607.62 and 76,739.49 is: 115,109.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,403.53 : 414,607.62 = 76,739.49 : x
  2. Step 2: Convert to fraction form
    276,403.53/414,607.62 = 76,739.49/x
  3. Step 3: Cross multiply
    276,403.53x = 414,607.62 × 76,739.49
  4. Step 4: Simplify right side
    276,403.53x = 31,816,774,852.18
  5. Step 5: Solve for x
    x = 31,816,774,852.18/276,403.53
  6. Step 6: Final answer
    x = 115,109.87

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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.