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Finding the Fourth Proportional to 272,450.30, 408,708.24 and 90,087.30

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Solution

The fourth proportional to 272,450.30, 408,708.24 and 90,087.30 is: 135,141.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,450.30 : 408,708.24 = 90,087.30 : x
  2. Step 2: Convert to fraction form
    272,450.30/408,708.24 = 90,087.30/x
  3. Step 3: Cross multiply
    272,450.30x = 408,708.24 × 90,087.30
  4. Step 4: Simplify right side
    272,450.30x = 36,819,421,829.35
  5. Step 5: Solve for x
    x = 36,819,421,829.35/272,450.30
  6. Step 6: Final answer
    x = 135,141.79

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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.