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Finding the Fourth Proportional to 415,388.51, 623,087.73 and 115,850.87

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Solution

The fourth proportional to 415,388.51, 623,087.73 and 115,850.87 is: 173,777.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,388.51 : 623,087.73 = 115,850.87 : x
  2. Step 2: Convert to fraction form
    415,388.51/623,087.73 = 115,850.87/x
  3. Step 3: Cross multiply
    415,388.51x = 623,087.73 × 115,850.87
  4. Step 4: Simplify right side
    415,388.51x = 72,185,255,606.83
  5. Step 5: Solve for x
    x = 72,185,255,606.83/415,388.51
  6. Step 6: Final answer
    x = 173,777.69

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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.