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Finding the Fourth Proportional to 415,352.58, 623,028.87 and 131,071.89

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Solution

The fourth proportional to 415,352.58, 623,028.87 and 131,071.89 is: 196,607.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,352.58 : 623,028.87 = 131,071.89 : x
  2. Step 2: Convert to fraction form
    415,352.58/623,028.87 = 131,071.89/x
  3. Step 3: Cross multiply
    415,352.58x = 623,028.87 × 131,071.89
  4. Step 4: Simplify right side
    415,352.58x = 81,661,571,515.46
  5. Step 5: Solve for x
    x = 81,661,571,515.46/415,352.58
  6. Step 6: Final answer
    x = 196,607.84

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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.